What does 2FA stand for?
AnswerTwo-factor authentication
Two-factor authentication requires two types of proof, such as a password plus a code.
Tech · Facts & stats
Security facts & stats
7 fact-checked facts about cybersecurity, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What does a firewall do?
AnswerFilters network traffic using a set of rules
A firewall allows or blocks traffic based on rules, forming a barrier between networks.
Going deeper
What does VPN stand for?
AnswerVirtual private network
A VPN creates an encrypted tunnel for data over a public network.
What is malware that encrypts files and demands payment called?
AnswerRansomware
Ransomware locks a victim's files and demands payment for the key.
In public-key cryptography, how many keys does each user have?
AnswerA pair: one public and one private
Data encrypted with a public key can only be decrypted with the matching private key.
Expert level
What does a SQL injection attack target?
AnswerDatabases, through malicious input in queries
SQL injection slips database commands into input fields to read or change data.
In password storage, what is a salt?
AnswerRandom data added to a password before hashing
Salting makes identical passwords produce different hashes, defeating precomputed lookup tables.
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