What does 2FA stand for?
AnswerTwo-factor authentication
2FA requires two kinds of proof, such as a password plus a code from your phone.
Coding · Facts & stats
Black Hat 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 based on security rules
A firewall allows or blocks traffic between networks according to set rules.
Going deeper
Where does the 'black hat' and 'white hat' terminology come from?
AnswerOld Western films, where villains often wore black hats
Classic Westerns often dressed heroes in white hats and villains in black ones.
In the 'CIA triad' of information security, what does the 'I' stand for?
AnswerIntegrity
The CIA triad is confidentiality, integrity and availability.
What is a 'zero-day' vulnerability?
AnswerA flaw unknown to the vendor, with no fix available yet
The name means developers have had zero days to fix the flaw.
Expert level
What is SQL injection?
AnswerInserting malicious database commands through user input
If input isn't handled safely, attackers can make a database run commands it shouldn't.
Which German cipher machine did Allied codebreakers at Bletchley Park famously work to break in World War II?
AnswerEnigma
Enigma used rotating wheels to scramble letters; Colossus was a British codebreaking computer.
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