Beginner Topic 4 of 51 Security & Cryptography
Salting
Adding random data to hashes to defeat precomputed attacks.
How it works
A unique random salt is combined with each password before hashing, so identical passwords hash differently and rainbow tables become useless.
Where it is used
Credential storage.
Common pitfall
A single global salt is weak; use per-user salts.
Where it fits in the course
Salting is topic 4 of 51 in Security & Cryptography, rated Beginner. It follows Passwords and Hashing. The next topic is Multi-Factor Authentication.
Practice and explore
- Open the interactive lesson, with a mini quiz.
- Take the Security & Cryptography quiz.
How to study this topic
- Read the explanation above and restate the definition in your own words.
- Open the interactive lesson and answer its mini quiz.
- Read the common pitfall, then write a short example that avoids it.
- Check your understanding in the Security & Cryptography quiz, and revisit the topic if you miss a question.
Frequently asked questions
What is Salting?
Adding random data to hashes to defeat precomputed attacks. It belongs to Security & Cryptography and is a beginner-level topic.
Where do people use Salting?
Credential storage.
What is the most common mistake with Salting?
A single global salt is weak; use per-user salts.
What should I learn before this topic?
Start with Passwords and Hashing, the topic just before it in Security & Cryptography.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the Security & Cryptography quiz.
Is Salting hard to learn?
It is a Beginner topic, so it works as an entry point. If the terms are new, read the explanation twice and try the visualizer before the quiz.
How long does it take to learn Salting?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to Salting?
Passwords and Hashing, Multi-Factor Authentication, Threats and Vulnerabilities are closely connected. The full list is in the related topics section of this page.
What should I study after Salting?
Continue with Multi-Factor Authentication, the next topic in Security & Cryptography.
Related topics
- Passwords and Hashing (Security & Cryptography)
- Multi-Factor Authentication (Security & Cryptography)
- Threats and Vulnerabilities (Security & Cryptography)
- Malware Types (Security & Cryptography)