The official browser extension stores and our website, https://getadblock.com, are the only safe places to get AdBlock. If you installed AdBlock from anywhere else, it may contain malware that can infect your computer. AdBlock is open source software, which means that anyone can take our code and use it for their own, possibly nefarious, purposes.


If you believe you may have a compromised copy of AdBlock, here's what we recommend you do:

  1. Uninstall AdBlock.
  2. Exit your browser.
  3. Run your browser. If you sync your browser settings across computers, be sure you're signed in to your synced profile.
  4. Confirm that sync no longer installs AdBlock automatically. If it does, try these suggestions for Chrome. (This is usually an issue only with Chrome. If it happens in other browsers, check their online help for advice.)
  5. Scan your computer for malware and take any action needed.
  6. Visit https:/getadblock.com and click GET ADBLOCK NOW.


This should make sure you're installing a clean copy of AdBlock after removing any trace of malware the bad extension may have left behind.


Bonus tip: Watch out for unsafe software download sites!

Not all free software download sites are scrupulous about checking their software for viruses and other malware. It's basically a jungle out there. Makeuseof.com has a nice list of safe Windows software download sites. It's from 2016, so the article may be out of date. Look for "safe software download sites" in your favorite search engine and you may find a more recent list.