Internet Banking False Positive Warning for Users with Avast! Antivirus
As of approximately 5:00 a.m. PT, August 28, users of the Avast! Security package may have received warnings like the example below when attempting to access the Home or Account History Pages within Intuit Online Banking.
We took this warning seriously and thoroughly investigated our services, networks and infrastructure for malicious applications and suspicious behaviors. We concluded the results are a false positive. This was not an Intuit specific issue. Other Internet sites containing the same virus string in uninfected files appear to be experiencing similar warning messages.
A false positive, also known as a false detection or false alarm, occurs when an antivirus program detects a known virus string in an uninfected file. Our solutions, while not infected with an actual virus, contain a string of characters that matches a non-malicious pattern also found in the malware. False positives are not an uncommon occurrence with anti-virus software.
This issue is resolved by updating to Avast! definition update 120828-2. Update version 120828-2 definition was created and signed by Avast! on 7:55 am PT, August 28, 2012. The Avast! client automatically checks for updates every 4 hours by default, so users connected to the internet should receive this update automatically.