The online might of Anonymous was put in doubt recently when @Symantec claimed that it had hacked Anonymous group accounts. @Symantec suggests it had infiltrated Anonymous through a Zeus Trojan malware that enabled the hackers from Symantec to find bank details of Anonymous members when they downloaded and used files, thus claiming to have ascertained the real identity of the Anonymous group members. Anonymous scoffed at Symantec's claim in one of their tweets mentioned below.

Claim virtual or real?
Is Anonymous a four member gang?
Figure that out?