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Author Archive
September 22nd, 2011

AVAST acquires mobile security app developer ITAgents

For those interested in all things Android, I have some exciting news. AVAST Software has acquired ITAgents, the Austrian developer of the Theft Aware mobile phone theft protection and recovery system.

The acquisition strengthens AVAST’s technology base and gives us a hands-on security app designed for today’s Android-powered smartphones. Read more…

April 11th, 2011

False positive issue with virus defs 110411-1

Virus definition update 110411-1 contained an error that resulted in a good number of innocent sites being flagged as infected. Generally, all sites with a script in a specific format were affected.

Our virus lab staff discovered the problem quickly after releasing the bad update and immediately started working on a fix. The fix was released about 45 minutes after the problematic update and has version number 110411-2. Anyone who still has this problem is kindly asked to manually update the definitions to the latest version, e.g. by right-clicking the avast taskbar icon (the orange (a) ball), and selecting Update -> Engine and Virus Definitions.


We sincerely apologize for the inconvenience. As this typically only affected remote sites (and not local files), simply updating to the latest definitions should completely solve the issue (no local files have been quarantined).

Categories: General, lab, Technology, Virus Lab Tags:
May 3rd, 2010

An interview about avast! 5 and its future

Softpedia recently asked me a few questions about avast and its future, which resulted in this article:

In case you have some additional questions about our technologies, or our strategy moving forward, I’ll try to answer these in the Comments section below.

Categories: General Tags:
April 25th, 2010

How to make the Full System Scan 6x faster in 10 days

During the last few weeks, we have been tweaking the avast! 5 engine; and while doing this, we found out that there were some hidden reserves with respect to its performance (namely, the duration of the on-demand scans).

One of the great new features of avast 5 is the persistent cache, a mechanism which allows us to skip rescanning of certain files. In particular, this applies to files which are on our internal whitelists, as well as files which are digitally signed by trusted publishers (we maintain a relatively short list of software publishers that we trust, and we consider any files produced and digitally signed by these publishers as safe).

Read more…

Categories: How to, Technology, Uncategorized Tags:
April 16th, 2010

New avast! update adds 7 more language packs

This Wednesday, we released a new program update for avast!, version number 5.0.507. It brings a fair amount of fixes and new features (details here) and also 7 new language packs. Namely, the following languages were added:

  • Dutch
  • Finnish
  • Norwegian
  • Portuguese (Portugal)
  • Slovenian
  • Turkish
  • Vietnamese

Read more…

Categories: General, Technology Tags:
March 3rd, 2010

New free AV comparative test: and the winner is…

I usually don’t bother writing about individual AV tests and how great we did here and there, but this time I’ll make an exception. Malekal Morte, a very well-known (and influential) security person (tester/blogger/expert) from France recently performed a test of all leading free antivirus software products, and I’m very delighted to say that avast 5 was selected as a winner of the test. Read more…

Categories: General, Technology Tags:
February 11th, 2010

avast! 5 small business console, part 1

Although you haven’t heard much about it so far, we are working on an all-new version of network management tool for small businesses – (for now) named the “Small Business Console” (SBC). This post will give you some insight on what you can expect (more posts on the subject will follow soon). Read more…

Categories: Uncategorized Tags:
February 4th, 2010

Avast 5 is here. But wait, what about ADNM and the other stuff?

Two weeks ago, we released the new avast 5. Although there were some minor hiccups in the beginning, I’d say it was a fairly successful launch, and the number of avast 5 users is now quickly growing – even though we haven’t really started the official upgrade campaign yet.

As most of you already know, we released 3 new products: avast 5 Free AV, avast 5 Pro AV, and avast 5 Internet Security. However, there seems to be some confusion about what will happen with the other editions of avast. This article would like to explain the situation in a bit more detail. Read more…

Categories: Uncategorized Tags:
February 4th, 2010

What happened to the automatic actions in the Boot-time scan?

Since the release of avast v5.0, we have heard quite a few times the question “where do I set up the automatic actions for the boot-time scan”? As a matter of fact, we decided to remove this feature from avast 5 and this short post will try to explain why. Read more…

Categories: Uncategorized Tags:
August 28th, 2009

Greetings from Redmond

We have spent the last week in the main Microsoft campus in Redmond, WA, making sure avast! works great on Windows 7. As a matter of fact, we have had two teams here working in parallel: one that takes care of interoperability issues (interoperability with both the new OS as well as other software applications) and one for the logo certification.

And what a week it was! Read more…