📖 What is Password Spraying?
Password Spraying is a brute-force technique where an attacker tries a few commonly used passwords against a large number of different accounts. This approach is designed to avoid account lockouts that typically occur when multiple passwords are tried against a single account.
"Contrast this with traditional brute forcing. Spraying targets many users with one password, whereas brute forcing targets one user with many passwords."
📚 Certification: CompTIA PenTest+ (PT0-002)
🔑 What are the Key Concepts of Password Spraying?
- ▸ Avoidance of lockout policies by attempting a single common password across many accounts, preventing the trigger of per-user account lockouts.
- ▸ Reliance on common passwords or seasonal themes, such as 'Company2024!', to exploit users who follow predictable password patterns.
- ▸ Requirement for a valid username list, often gathered through OSINT, social media scraping, or previous data breaches before the attack begins.
- ▸ Detection through log analysis, specifically looking for a pattern of single failed login attempts across a wide range of distinct accounts.
🎯 How does Password Spraying appear on the PT0-002 Exam?
You may be asked to identify the best attack method when you have a list of corporate usernames but want to avoid triggering account lockouts on a target web application by limiting attempts per user.
A scenario might describe analyzing security logs that show one failed login attempt for 1,000 different users from a single source IP within a short timeframe; you must identify this as password spraying.
Expect questions where you must choose between brute forcing and password spraying based on the goal of stealth and the risk of locking out the entire organization's user base.
❓ Frequently Asked Questions
How does password spraying differ from credential stuffing?
Password spraying uses a few common passwords against many users. Credential stuffing uses a list of leaked username-password pairs from a different breach to see if the same credentials work on the current target.
What is the most effective mitigation strategy for this attack?
Multi-Factor Authentication (MFA) is the strongest defense, as it stops the attacker even if the password is correct. Additionally, implementing conditional access policies and monitoring for anomalous login patterns can help.