2011 SecurID compromise — 40,000,000 tokens
Data compromised
SecurID seed values; token security undermined
Technical writeup
Mar 2011. Sophisticated APT breached RSA via spearphishing (malicious Excel/Flash). Stole SecurID seed values; attackers could forge tokens. 40M token users affected. Stolen data used in May attack on Lockheed Martin. EMC (RSA parent) spent $66M in Q2. RSA replaced virtually all tokens.
Root cause
Spearphishing; Adobe Flash vulnerability; seed value theft.