Graham Cluley

Graham Cluley

Independent security analyst


Graham Cluley is an award-winning security blogger, researcher and public speaker. He has been working in the computer security industry since the early 1990s, having been employed by companies such as Sophos, McAfee and Dr Solomon’s. He has given talks about computer security for some of the world’s largest companies, worked with law enforcement agencies on investigations into hacking groups, and regularly appears on TV and radio explaining computer security threats. In 2011 he was inducted into the InfoSecurity Europe Hall of Fame. Follow him on Twitter at @gcluley

217 articles by Graham Cluley

Malware

With just days to go, just how many PCs are still running Windows XP?

With just days to go, just how many PCs are still running Windows XP?

Malware

With just days to go, just how many PCs are still running Windows XP?

If computers continue to run Windows XP, and don't receive any more security patches. they are not just putting themselves and the data they carry at risk, they are endangering all of us who use the internet.

Graham Cluley02 Apr 20142 min. read


ESET research

Over 500,000 PCs attacked every day after 25,000 UNIX servers hijacked by Operation Windigo

Over 500,000 PCs attacked every day after 25,000 UNIX servers hijacked by Operation Windigo

ESET research

Over 500,000 PCs attacked every day after 25,000 UNIX servers hijacked by Operation Windigo

Malware researchers at ESET have uncovered a widespread cybercriminal operation that has seized control of tens of thousands of Unix servers. Learn more about how to check your systems for compromise, and prevent innocent computer users from being attacked.

Graham Cluley18 Mar 20142 min. read


Malware

Critical Internet Explorer zero-day vulnerability patched by Microsoft

Critical Internet Explorer zero-day vulnerability patched by Microsoft

Malware

Critical Internet Explorer zero-day vulnerability patched by Microsoft

Microsoft releases a fix for a zero-day vulnerability that has already been exploited by hackers in targeted attacks against some organisations. Don't delay!

Graham Cluley12 Mar 20142 min. read


Cybercrime

Justin Bieber is the latest celebrity to have his Twitter account hacked

Justin Bieber is the latest celebrity to have his Twitter account hacked

Cybercrime

Justin Bieber is the latest celebrity to have his Twitter account hacked

Maybe it's time to think twice before rushing to click on a link, next time your favourite celebrity says something bizarre on Twitter.

Graham Cluley10 Mar 20143 min. read


Malware

Mac malware spread disguised as cracked versions of Angry Birds, Pixelmator and other top apps

Mac malware spread disguised as cracked versions of Angry Birds, Pixelmator and other top apps

Malware

Mac malware spread disguised as cracked versions of Angry Birds, Pixelmator and other top apps

Pirated versions of popular Mac apps, spread via torrent sites, try to infect your computer with malware... and steal Bitcoins.

Graham Cluley25 Feb 20141 min. read


Malware

British Airways e-ticket malware attack launched via email

British Airways e-ticket malware attack launched via email

Malware

British Airways e-ticket malware attack launched via email

If you have received an unexpected email, claiming to come from British Airways, about an upcoming flight that you haven’t booked – please be on your guard. Online criminals are attempting to infect innocent users’ computers, by disguising their attack as an e-ticket from the airline.

Graham Cluley25 Feb 20142 min. read


The perils of passwords - and how to avoid them

The perils of passwords - and how to avoid them

The perils of passwords - and how to avoid them

There are lots of ways that hackers can steal your passwords, and use them against you. So what can you do to fight back?

Graham Cluley24 Feb 20144 min. read


Kickstarter hacked. Users told to change passwords

Kickstarter hacked. Users told to change passwords

Kickstarter hacked. Users told to change passwords

Security expert Graham Cluley takes a look at the Kickstarter hack, and discovers there's more to think about than just changing your passwords.

Graham Cluley16 Feb 20145 min. read


Malware

Critical IE and other flaws discovered. Patch your systems now, says Microsoft

Critical IE and other flaws discovered. Patch your systems now, says Microsoft

Malware

Critical IE and other flaws discovered. Patch your systems now, says Microsoft

If your system administrator looks a little frazzled this week, be nice to him or her and don't grumble too much about the photocopier being jammed. It may be that they have more serious issues on their mind.

Graham Cluley12 Feb 20142 min. read