LastPass pwned

How to securely check your LastPass vault against the

1. How to check your passwords. First, you need to export the LastPass vault using More options -> Advanced -> Export -> LastPass CSV File, then copy-paste the contents to a text editor and save it. As for the location, it's best to choose an ephemeral place, like /tmp, as it will get wiped automatically
2. As haveibeenpwned is a free service it couldn't realistically be retained, in LastPass, along-side the now premium only dark web monitoring service run by Enzoic. level 1 3 points· 1 month ago You're getting it for free
3. Check LastPass sites in your account against a given list of pwned sites - toozej/lastpass-pwned-checke
4. I've been using LastPass for quite a while now and never had any issues. I use the plugin and am using my Master password a good 10-15 times a day. Haven't changed it in months. Today, I suddenly can't log in anymore. LastPass keeps telling me that the password is wrong - but I'm completely certain it's right. I've been using this for ages. I have tried everything - every possible former password, any way it could possibly have been spelt. This is a disaster as I'm using LastPass.
5. LastPass strengthens the authentication hash with a random salt and 100,000 rounds of server-side PBKDF2-SHA256. At least they used good key strengthening techniques. Unless you are specifically targeted, and your password is in a wordlist, it's very unlikely your plain text password will be known. level 2. adisin
6. Breaches you were pwned in. A breach is an incident where data has been unintentionally exposed to the public. Using the 1Password password manager helps you ensure all your passwords are strong and unique such that a breach of one service doesn't put your other services at risk

LastPass kann als sicherer und kostenloser Passwortgenerator auf jedem Computer, Telefon oder Tablet genutzt werden. LastPass Premium und Families bieten noch mehr: Jedes Passwort, das Sie auf einem Gerät erstellen und speichern, ist sofort auf allen anderen verfügbar LastPass wurde mit neuen Tools aktualisiert, die Ihre Passwörter aktiv überwachen und Sie darüber informieren, ob eines davon gefährdet ist Pwned Passwords. Pwned Passwords are 613,584,246 real world passwords previously exposed in data breaches. This exposure makes them unsuitable for ongoing use as they're at much greater risk of being used to take over other accounts. They're searchable online below as well as being downloadable for use in other online systems LastPass remains a very viable option for those who want a password manager that runs as a managed service, but the LogMeIn acquisition has people concerned. One of the common complaints is that LogMeIn was deceptive in the promotion of their free service. Here's the issue: The problem with will always be free is when it's no longer free: After 10 years, LogMeIn Free is going away.

LastPass removes free, manual PWNED database check

LastPass Pwned Passwords checker. This is a script for checking if any of the passwords you have stored in LastPass have been exposed through previous data breaches. To use the script you need to have Python 3 installed and you need a CSV export of your LastPass vault. The export can be generated from the LastPass CLI with: lpass export > lastpass.cs LastPass operates on a zero-knowledge security model. Sensitive data stored in LastPass is encrypted at the device level with AES-256 encryption before syncing with TLS to protect from on-path attackers. We utilize industry best practices to protect our infrastructure, including regularly upgrading our systems, as well as utilizing redundant data centers to reduce the risk of downtime or a single-point-of-failure. LastPass is market-tested by over 43,000 companies, including Fortune 500 and.

Daher haben sie eine riesige Datenbank und können Ihnen somit mitteilen, ob Sie zu irgendeinem Zeitpunkt pwned waren. LastPass.com. LastPass ist ein Online-Passwortspeicheranbieter und Passwortgenerator. Die meisten dieser Passwörter sind nicht zu merken und daher unzerbrechlich (oder fast unzerstörbar). LastPass informiert Sie darüber, ob Ihre Anmeldedaten gehackt wurden. Der Prozess ist. Ein Passwort-Manager gehört heute auf jedes System und wer Diensten wie LastPass nicht vertraut, landet schnell bei Open-Source-Tools wie KeePass. Doch das Original ist nicht besonders schick und. LastPass works where you do. The LastPass browser extension and mobile app let you quickly generate strong passwords, manage your saved s and more. Get the Free LastPass Browser Extension. LastPass is free to use as a secure password generator on any computer, phone, or tablet

GitHub - toozej/lastpass-pwned-checker: Check LastPass

1. Password management service LastPass can now proactively tell you if your s have been compromised in data breaches — but only if you're a paid LastPass subscriber. The tool comes as part of a..
2. This week LastPass announced a partnership with PwnedList, a website which identifies hacked accounts. PwnedList will make available its continuously updated database so that LastPass users can receive notifications for any username/password combinations that have been compromised
3. logs into LastPass and retrieves its vault. goes through your entries and checks passwords through the haveibeenpwned API ( actual plain passwords are not sent anywhere) compiles the results into a report for you to see if you actually were pwned
4. No, LastPass never has access to your master password. We use encryption and hashing algorithms of the highest standard to protect user data. We hash both the username and master password on the user's computer with 5,000 rounds of PBKDF2-SHA256, a password strengthening algorithm. That creates a key, on which we perform another round of hashing, to generate the master password authentication hash. That is sent to the LastPass server so that we can perform an authentication.

Haveibeenpwned integration? : Lastpas

Sie können auch nach einem Kennwort suchen, um festzustellen, ob es jemals in einem Leck aufgetreten ist. Gehen Sie zur Seite Pwned Passwords auf Pwned Pwned. Geben Sie auf der Website ein Kennwort ein und klicken Sie auf die Schaltfläche pwned?. Sie sehen, ob sich das Passwort in einer dieser Datenbanken befindet und wie oft es gesehen wurde. Wiederholen Sie diesen Vorgang so oft, wie Sie möchten, um weitere Passwörter zu prüfen LastPass also offers a view of Compromised passwords here. This list shows you which websites have had security breaches since you've last changed your password on them, which means your password potentially could have leaked. It's a good idea to change the passwords of any sites that appear here haveibeenpwned_lastpass. Passwords are not sent from your host machine. This article explains the process by which the passwords are checked. Website https://haveibeenpwned.com provides a way for you to check whether some of your passwords/usernames were leaked during one of the many breaches of online services. If you are like me, you have a LastPass account with way too many random passwords. Zumindest gibt der Macher von Have I Been Pwned an, das nicht zu tun. Unsere Empfehlung: Nutzen Sie die Passwort-Prüfung als Hilfs-Tool und um sich einmal klar vor Augen zu führen, wie unsicher. LastPass's password generator is a bit better than Dashlane's password generator — in addition to creating passwords with letters (both uppercase and lowercase), numbers, and symbols, LastPass lets you generate passwords that are easy to say (without special characters) and easy to read (without characters that are hard to read, like I, I, O and 0)

LastPass hacked : pwne

LastPass führt Sicherheits-Dashboard mit Dark-Web-Überwachung ein. Das Dashboard informiert unter anderem über schwache Passwörter. Die Dark-Web-Überwachung gleicht gespeicherte Anmeldedaten. LastPass spokesperson Amber Gott explained the mechanics of the new service to me this way: We do batch checking nightly, against the whole [PwnedList] database. The service is free, and opt-out. LastPass Shahob Toshev Pros Info Many features are free Premium costs only $2 per month LastPass Enteprise and Families Warns about duplicate passwords Fills. LastPass Sentry Alerts. After undertaking the Security Challenge, I got a couple of emails that, quite honestly, I have no idea what they are saying / what I should do. Extract: Here's your data compromise report. If you didn't request this report, your email may be associated with a site in someone else's LastPass vault Have I Been Pwned wurde von vielen Medien erwähnt und wird sogar von einigen Regierungen verwendet.Have I Been Pwned bietet auch eine Funktion, mit der Sie E-Mail-Benachrichtigungen erhalten können, wenn Ihre E-Mail-Adresse jemals in einen Datenverstoß verwickelt war, und mit der Sie überprüfen können, ob jemals ein Kennwort verletzt wurde (Hinweis: Sie kann nicht Überprüfen Sie.

Ein Passwort-Manager gehört heute auf jedes System und wer Diensten wie LastPass nicht vertraut, landet schnell bei Opensource-Tools wie KeePass. Doch das Original ist nicht besonders schick und. LastPass wiederholt seinen Testsieg aus dem Vorjahr und belegt den ersten Platz mit sehr guten Leistungen in allen Testbereichen. Doch Vorsicht, LastPass gibt es mit vollem Funktionsumfang nur als.

I have lastpass Authenticator setup on 3 different phones all logged in with the same lastpass account. Only one Authenticator app out of 3 has all the tokens on it. The other two only have a couple. Everything has been backed up. Is this normal? Any ideas how to fix this? 0 comments. share. save hide report. 100% Upvoted. This thread is archived. New comments cannot be posted and votes cannot. HIBP for LastPass. Contribute to kojenov/lastpwn development by creating an account on GitHub Dienste wie KeePass, Lastpass und 1Password haben sich in den vergangenen Jahren einen guten Ruf erarbeitet, auch weil sie auf PC und Mac, Android und iOS sowie in verschiedenen Browsern nutzbar sind

Have I Been Pwned: Check if your email has been

Yo utilizo Lastpass desde hace años, y que avisen de que se comprometió, se refiere solo a que lograron acceder, pero claramente explicaron que no lograron obtener los registros cifrados de claves. Otras empresas simplemente se hubieran quedado callados, en lugar de avisar de la intrusión. No solo porque les ocurrió eso voy a salir corriendo quejándome por eso. Google tambien a sido. Have I been Pwned: Die Site Während Lastpass Ihre Daten verschlüsselt im Internet ablegt, behält sie Keepass standardmäßig auf Ihrer Festplatte. Jeder Passwortmanager schlägt Ihnen. LastPass. Ebenfalls sehr bekannt ist LastPass, das mittlerweile zum Bostoner Softwareunternehmen LogMeIn gehört. In der Basisversion kostenlos punktet das Tool vor allem mit seiner leichten. LastPass Pwned Passwords checker. This is a script for checking if any of the passwords you have stored in LastPass have been exposed through previous data breaches. To use the script you need to have Python 3 installed and you need a CSV export of your LastPass vault. The export can be generated from the LastPass CLI with: lpass export > lastpass.csv. Use the online checker for every email account you have. If one has been hacked either close it down or make sure you change passwords regularly. Never reuse the same password even if you think it a safe account. For example, insecure IoT like security cameras can give home Wi-Fi network access. Use a password manager like LastPass

Moments later you'll get either an all-clear saying Good news - no pwnage found! or an Oh no - pwned! message letting you know how many breached sites that email address has appeared on. MORE SPAM, MORE ATTACKS Pwn is an old gaming slang term derived from the verb own. According to the Wikipedia page, pwn implies domination or humiliation of a rival, pri Is LastPass safe? There are great ways to make memorable and secure passwords, but how can you remember them all?This is where password managers like LastPass come to the rescue. These encrypted password vaults not only protect you from scribbling passwords on your notebook (which you should never do), they also:. Store your payment details and shipping addresses Have I Been Pwned ist ab sofort Open Source. Diskutiere und helfe bei Have I Been Pwned ist ab sofort Open Source im Bereich User-Neuigkeiten im SysProfile Forum bei einer Lösung; Have I Been Pwned ist ab sofort Open Source HIBP gehört beispielsweise als feste Basis in Passwortmanager wie 1Password oder auch LastPass , kann... Dieses Thema im Forum User-Neuigkeiten wurde erstellt von.

Introducing Have I been pwned? - aggregating accounts across website breaches. I often write up analyses of the passwords disclosed in website breaches. For example, there was A brief Sony password analysis back in mid-2011 and then our local Aussie ABC earlier this year where I talked about Lousy ABC cryptography cracked in seconds as. Pwned Passwords v2 - Datenbank wurde massiv erweitert - Teste jetzt neu (5) Microsoft Edge für iOS jetzt mit Support für LastPass und 1Password (0) zu den aktuellen News. 6 Kommentare zu. [Update 25.06.2020]: Microsoft hat im Edge (aktuell Dev und Canary) den Passwort-Monitor integriert. Da die Funktion nach und nach ausgerollt wird, erschien sie nicht in der aktuellen Changelog. LastPass also encrypts user data at the device level with end-to-end 256-bit AES encryption. And because your email and master password are used to decrypt your data, hackers wouldn't be able to access your passwords even if LastPass's servers get hacked. LastPass has the same 2FA options as Dashlane: Authenticator apps — Google Authenticator, Microsoft Authenticator, Toopher, Duo. As with Pwned Passwords, by pushing this out in the web-based version of the product they can get it to customers quickly then over time, bake it right into the desktop versions as well. There's also a bunch of other ways 1Password can use the data to streamline how users protect their accounts and that's something we're actively discussing. I expect we'll see the existing functionality.

Passwortgenerator LastPas

Have I Been Pwned ist ab sofort Open Source. Have I Been Pwned, oder auch HIBP, ist einer der Dienste, der jedem von euch, der auch nur ein wenig Wert darauf legt, wie sicher seine Daten im Netz. LastPass Pwned Passwords checker. This is a script for checking if any of the passwords you have stored in LastPass have been exposed through previous data breaches. To use the script you need to have Python 3 installed and you need a CSV export of your LastPass vault. The export can be generated from the LastPass CLI with: lpass export > lastpass.csv or can be extracted with the browser. LastPass secures everything you need, from passwords to digital records and notes, so you can simply stay secure online and get back to the things you love the most. Stay connected with family. These days when we are spending a lot of time communicating online with friends and family, we need a secure way to stay connected. LastPass Families can take control of your family's digital life to. One of my old email addresses was involved in the recent Whitepages breach disclosure (source: Have I Been Pwned). I don't remember on which websites I used that email address for registration, but I would like to reset my password everywhere possible. Websites could include: Facebook, Google, Amazon, eBay, Paypal, etc. - basically the top N commonly-used or sensitive web applications. Ein Passwortmanager hilft dabei, den Überblick zu behalten. Wir stellen die besten Gratis-Programme vor. Erste Schritte mit dem Lastpass-Passwortmanager. Foto-Serie mit 6 Bildern. Ob im Online.

LastPass benachrichtigt Sie, wenn Ihre Passwörter

• Passwort Manager Test. Das Angebot an Passwort Managern ist groß, und obwohl das Prinzip überall das gleiche ist, unterscheiden sich die Programme untereinander doch sehr. Um etwas Übersicht auf dem umkämpften Markt zu schaffen, haben wir 14 Anbieter einmal genauer unter die Lupe genommen
• Mit Pwned Passwords gibt es dort seit letztem Jahr einen Aufsatz, der auch checken kann, ob nur ein Passwort (also keine Kombination aus Logindaten) in einer der Listen auftaucht
• Stránka Troy Hunt's Have I Peen Pwned udržiava databázu kombinácií používateľského mena a hesla z úniku verejnosti. Tieto sú prevzaté z verejne dostupných porušení, ktoré sa dajú nájsť na rôznych webových stránkach alebo na tmavom webe. Táto databáza jednoducho skontroluje sami bez toho, aby ste navštívili skicárne časti webu. Ak chcete použiť tento nástroj, pre
• Im Gegensatz zu vielen anderen Passwortmanagern (z.B. KeePass oder LastPass) Pwned Passwords findet gehackte Kennwörter. Seit der Version 5.6.8 können Sie in Enpass auch überprüfen, ob die von Ihnen verwendeten Kennwörter schon einmal gehackt oder gestohlen wurden. Dazu verwendet das Programm die API des Web-Tools Pwned Passwords des australischen Sicherheitsforschers Troy Hunt.
• So the Have I Been Pwned site revealed to me that my (spam collector) email that I use at most sites has been compromised at 3 sites, and my main email has been compromised at 3 sites. But both emails have multiple different passwords and none of them are used for my important sites. One of the compromised sites is MySpace, which shows you how old that access was

Next, Have I Been Pwned will scour its database of breached passwords to see if yours appears in the hoard of stolen log-in credentials. Popular password managers include Dashlane, LastPass and 1Password. Enable two-factor authentication: Every additional layer of security you add to your account is like an extra wall that an intruder has to climb over. Two-factor authentication is a. Bei Lastpass liegen die verschlüsselten Daten dagegen auf dem Server des Anbieters, die Ver- und Entschlüsselung erfolgt aber nach Angaben des Anbieters nur lokal auf dem Gerät. Geschützt. GitHub Gist: star and fork flts's gists by creating an account on GitHub Pwned Pass free download - PerformanceTest, LastPass Password Manager, Tiny Cars, and many more program

Have I Been Pwned: Pwned Password

1. Enpass Password Manager 6.6.2 kostenlos in deutscher Version downloaden! Weitere virengeprüfte Software aus der Kategorie Sicherheit finden Sie bei computerbild.de
2. GitHub Gist: star and fork pelrun's gists by creating an account on GitHub
3. Lastpass. LastPass har en lignende funksjon integrert i sin sikkerhetsutfordring. For å få tilgang til den fra en LastPass-nettleserutvidelse, klikk LastPass-ikonet på nettleserens verktøylinje, og velg deretter Flere valg> Sikkerhetsutfordring
4. Have I Been Pwned (HIBP) gets close to one billion requests per month from people checking to see if emails, passwords and mobile phone numbers have been leaked on the internet
5. Lastpass, nimm die Tracker aus dem Passwortmanager! Passwortmanager. Das letzte Mal Lastpass verwenden. Pwned Passwords. Troy Hunt veröffentlicht eine halbe Milliarde Passworthashes. Passwortmanager im Vergleich. Das letzte Passwort, das du dir jemals merken musst. IBM. Von der Lochkarte zum Quantencomputer . Hardwaretests. Tynker Hifive Inventor - Fazit. Sony Alpha 1 - Fazit. Razer Kyio Pro.
6. Gegen Daten- und Identitätsdiebstahl helfen starke einmalige Kennwörter. Passwort-Manager für Windows, Firefox, Chrome, Mac verwalten sie - hier eine Übersicht

Leak-Datenbank «Have I Been Pwned» wächst weiter. Der Dienst «Have I Been Pwned» wird grösser und grösser. Inzwischen umfasst die Leak-Datenbank mehr als 10 Milliarden Einträge. (Quelle: Pixabay) Vor rund sieben Jahren hat der australische IT-Security-Experte Troy Hunt den Dienst « Have I Been Pwned » ins Leben gerufen The partnership will enable the company to alert customers when their e-mail addresses are tied to security breaches Have I Been Pwned is a website that maintains a database of usernames and passwords that have been leaked, and are now freely available on various places across the World Wide Web, including the Dark Web. To check whether any of your personal information has been leaked, head over to Have I Been Pwnd? and enter your username or email address. The website will then check this information. Have I Been Pwned, the website that tracks compromised passwords, has announced that it will now work with the FBI to include any hacked and stolen passwords found in its investigations This tweet isn't entirely accurate; it was all Junade's idea and he designed the k-anonymity implementation for HIBP's Pwned Passwords. For free, because he's a good bloke and Cloudflare supported him. LastPass has now employed that same model and they follow the other notable names Junade mentioned. I'm sure I speak for him as well when I say we couldn't be happier that other companies have.

Troy Hunt: LogMeIn now owns LastPass - here's how to

1. have i been pwned leaks hack Have I Been Pwned. Falls eure E-Mail schon einmal Teil eines Datenlecks war, wird euch womöglich auch angezeigt, von welchen Webseiten diese Daten durchgesickert sind. Wenn ihr euer Passwort für diese Seite noch nicht geändert habt, solltet ihr das spätestens jetzt tun. Lest auch: Warum es krank macht, abends im Bett noch die E-Mails zu checken. Und wenn ihr.
2. (Pwned, pronounced like owned, is geek speak for conquered.) Try your family members' emails and your favorite LastPass and 1Password all showed me how it will work when it.
3. Have I Been Pwned? RELATED: LastPass. LastPass has a similar feature integrated into its Security Challenge. To access it from a LastPass browser extension, click the LastPass icon on your browser's toolbar, and then select More Options > Security Challenge. LastPass finds a list of email addresses in your database and asks if you want to check whether they've ever appeared in any.
4. The password management service also has a new security dashboar
5. LastPass is a popular password manager that has earned credibility owing to its efficiency. Nonetheless, like any other software, it is also prone to security flaws. Recently, a researcher has discovered a vulnerability in password manager LastPass. The flaw, upon exploit, could expose credentials of previously visited websites
6. LastPass has been updated with new tools that'll actively monitor your passwords and let you know if any of them are compromised. This includes dark webLastPass has been updated with new tools that'll actively monitor your passwords and let you know if any of them are compromised. This includes dark web monitoring that automatically checks you

LastPass recently announced that it will be limiting cloud-access to one-device per user, so if you were using it to sync your passwords to your phone and computer, you won't be able to do so from March 16th.. Many users have hit out at the company on social media, and some believe that it might have dug its own grave with this decision Das Dashboard informiert unter anderem über schwache Passwörter. Die Dark-Web-Überwachung gleicht gespeicherte Anmeldedaten mit Datenbanken mit kompromittierten Nutzernamen und Passwörtern an. LastPass had an issue the other day, a rather nasty one by all accounts that under certain (undisclosed) circumstances, it looks like it could lead to someone's password (or possibly passwords) being disclosed by virtue of a remote code execution vulnerability.This is not a good thing - nobody wants an RCE vuln in their software - but as is prone to happen with these incidents, some people. LastPass. The LastPass password manager was originally developed by Marvasol, Inc. back in 2008. In 2015, cloud-based service provider LogMeIn, Inc. acquired LastPass for October 2015. It has. Troy Hunt ist vielleicht vielen unserer Leser bekannt. Er betreibt die Seite Have I Been Pwned. Sie benachrichtigt auf Wunsch Nutzer, wenn ihre Mail-Adresse in Zusammenhang mit einem.

The LastPass community is the best place to share your knowledge and feedback, ask questions or get for advice from fellow LastPass Enterprise users. 493 . topics. 06-14-2021 12:06 PM . most recent update. LastPass Mobile Apps. A place to share your knowledge and feedback, ask questions and discus the LastPass Mobile Apps. 155 . topics. 06-14-2021 11:54 AM . most recent update. LastPass. LastPass ist in erster Linie ebenfalls ein Web-basierter Passwort-Manager, trotzdem gibt es die Option, 2FA mit YubiKey durchzuführen. (Weitere Informationen zu Dashlane verglichen mit LastPass findest Du hier). Dashlane bietet außerdem Backup-Codes für 2FA. Mit diesen Codes kannst Du einen Passwort-Tresor öffnen, auch wenn Du das Gerät.

Best password manager to use for 2021. Ditch the sticky notes and get peace of mind. One of our favorite password managers can be your first defense against getting hacked Benutzt 10minutemail und Lastpass hierfür, funktioniert super und es ist mir egal ob solche Passwörter in der cloud landen, sollen sie doch, dann kann jemand mein forum account übernehmen. Wie LastPass speichert 1Password nicht nur Zugangsdaten, sondern auch Kreditkarten und vertrauliche Codes. Der Zugang ist nicht nur mit einem Passwort geschützt, sondern zusätzlich mit einem geheimen Schlüssel. 1Password unterstützt alle gängigen Smartphone- und Computer-Betriebssysteme inklusive ChromeOS

Have I Been Pwned: 2,7 Milliarden Datensätze mit E-Mail-Adressen und Passwörtern im Netz Er betreibt die Seite Have I Been Pwned. Sie benachrichtigt auf Wunsch Nutzer, wenn ihre Mail-Adresse in Zusammenhang mit einem Datenleck irgendwo auftauchte LastPass seem to be shooting themselves in the foot with their irrational and inconsistent pricing. - A few years back, their free/premium tiers were looking similar to what they announced today. Only they charged a mere $15/year for premium, which I gladly paid. - Then, overnight, they offered syncing across all types of devices for their free tier. The premium tier was only adding some niche.

LastPass schränkt die Gratis­nutzung ein und ein Wechsel zu KeePassXC bietet sich an. Es ist Open Source und synchronisiert mithilfe von Syncthing ohne Cloud. 12.03.2021 07:30 Uhr 45 Kommentar LastPass is a good option if you want your passwords to synchronize across different devices. 1Password is widely used and integrates with Pwned Passwords database so that you can know if your password has been previously exposed or leaked in a data breach. Dashlane, which work on mobile, allows you to use your passwords wherever you go on different devices while keeper security integrates. KeePass 2.48.1 kostenlos downloaden! Weitere virengeprüfte Software aus der Kategorie Sicherheit finden Sie bei computerbild.de LastPass is another extremely popular password manager. It's free, dependable, and simple to use. LastPass has many of the same features as Keeper, including 2-factor authentication, a password generator, secure sharing, and top-notch encryption. The other option is Dashlane, which is another password manager that has a free version. They both have great security features like 2-factor. Lastpass streicht bei der Gratis-Version seines Passwortmanagers ein wichtiges Feature. Lastpass will offenbar mehr Nutzerinnen und Nutzer zu zahlenden Kunden machen. Denn ab Mitte März streicht der Anbieter ein wichtiges Feature der Gratis-Version des beliebten Passwortmanagers. Dabei handelt es sich um die geräteübergreifende Nutzung