Passwords secure the vast majority of systems today. This time-tested approach does provide adequate security for many purposes, but also has potential drawbacks. Attackers can wage attacks designed to crack passwords stored in system files. Many recent attacks used this approach to steal massive numbers of user accounts. In this video, learn about common attacks against passwords, including brute-force attacks, dictionary attacks, hybrid attacks, and rainbow tables.
- [Instructor] Passwords secure access…to the vast majority of systems today.…This time-tested approach does provide…adequate security for many purposes…but also has potential drawbacks.…Attackers can wage attacks…designed to crack passwords stored in system files.…Many recent attacks used this approach…to steal massive numbers of user accounts.…Let's take a look at some password attacks.…On Linux systems, password files contain user credentials.…When a user attempts to log in to a system,…the login process checks the password file…to determine whether the password is valid.…
Now, of course, the file doesn't simply contain…a copy of the password.…That would be an easy target for attackers…and would also allow system administrators…to know all of the user passwords on a system.…Instead, the password file contains a password hash,…shown here, computed using a one-way hash function.…When the user logs in,…the login process takes the password, computes a hash,…and then compares that hash with the one stored in the file.…
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- Identity and access management overview
- Identification mechanisms: user names, access cards, biometrics, and registration
- Authentication factors
- Password authentication protocols
- Identity as a service (IDaaS)
- Enforcing accountability
- Managing credentials with policies
- Using access control lists
- Defending against access control attacks
Skill Level Advanced
1. Identity and Access Management
5. Credential Management
7. Access Control Attacks
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