Piriform issued a statement saying that versions and were impacted, so updating to either of those would have put you at risk.Ĭheck that version number. So if during that window of time you moseyed on over to Piriform's (the company that makes CCLeaner) website and downloaded the software, you're probably in trouble.Īlso, if you updated your CCleaner software during that almost month-long block of time, things are not looking good. Checking your computerįirst things first: How to determine if you're at risk? According to Cisco Talos, the cybersecurity team that discovered CCLeaner was compromised, the malicious payload was delivered between Augand September 12, 2017. Oh, and some damage may have already been done. However, sorry to say, it's going to be a pain. Also falling squarely in the 'good news' category is the fact that if your device was infected, you can clean it right up. Thankfully for you, it's easy to find out if your PC is potentially one of the likely millions affected by this breach. You thought that by downloading CCleaner, a popular and free app for optimizing PC performance, you'd sweep out those digital cobwebs and be zipping around your trusty Windows machine at lightening speeds in no time.īut then CCleaner was compromised by hackers, and you learned that by installing it, you may have actually loaded malware onto your computer.

Ccleaner update not working