Security programs will sometimes unintentionally identify a clean program or file as malicious if its code or behavior is similar to a known harmful program or file. This is known as a False Positive. In most cases, a False Positive is fixed in a subsequent database release.
Usually, updating your F-Secure security product to use the latest database is enough to resolve the issue. You can check by first updating your F-Secure security product to use the latest detection database updates, then rescanning the file.
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it to F-Secure Labs for re-analysis.
NOTE If the file was moved to quarantine, you will need to first collect the file from quarantine before you can submit it.
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
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A Trojan-PWS is very similar to a Trojan-Spy, but is geared mainly towards stealing account log-in details, including passwords (the PWS stands for password stealer). In addition, some Trojan-PWSs may also include spying and data-stealing routines.
Attackers often distribute trojan-PWSes as part of the payload of another harmful program, such as a trojan-dropper, which silently drops and installs the trojan-spy on a device.
They may also be distributed as disguised files attached to emails. In these cases, the attackers rely on social engineering to trick users into opening the attached files, which then silently installs the trojan-PWSes.
Some trojans (particularly on the Android platform) are actually copies of legitimate apps that have been repackaged or trojanized to include harmful components. These are often distributed using the same (or very similar) names and designs as popular programs, to increase the chances that users will mistake the trojan for the legitimate app and install it instead.
To perform its password-stealing routine, a Trojan-PWS will usually drop a keylogging component. Such components stays active in Windows memory and starts keylogging (recording keystrokes) when a user is asked to input a log-in ID and a password.
Stolen log-ins and passwords can allow an attacker to read a user's email on public and corporate mail servers, as well as giving access to more sensitive material, such as online banking accounts.
As of March 2010, the former naming convention 'Trojan-PSW' has been updated to 'Trojan-PWS' to make identification easier for users and to ensure naming practices are in line with current industry standards.