Guccifer 2.0 apparently forgot to activate a virtual private network during communications, allowing US investigators to identify the hacker as an intelligence agent at Russia's GRU.
Guccifer 2.0, widely believed to be an alias for hackers tied to the Russian government, apparently altered at least one document stolen from the Democratic National Committee (DNC), adding the designation "confidential" to the email.
Rob Sloan explains how the DNC hack was tied to Russian state hackers
An individual who self-identified as Guccifer 2.0 continues to deny reports by security firms that link the purported hacker or hacking group to Russian advanced persistent threat (APT) groups.
The Russian government has announced that 20 different bodies within Russia, many of them government agencies, have been found with espionage malware lurking in their networks
A flood of information has emerged that connects GOP presidential nominee Donald Trump to a questionable cast of characters who are linked to Russian interests.
Toni Gidwani challenges Guccifer 2.0's claimed attribution for the Democratic National Committee (DNC) breach
The eastern European hacker who breached the defences around the DNC networks in America says he's not working for the Russians.
A hacker named Guccifer 2.0 has come out to claim responsibility for the recent hack on the Democratic National Committee
Romanian jailed hacker Marcel Lehel Lazar, otherwise known as 'Guccifer', claims that he repeatedly breached the personal email server of US presidential candidate Hillary Clinton in early 2013 when she was Secretary of State.