It is not unusual for an anti-virus or anti-malware scanner to having problems with or be suspicious of compressed
, and packed
files because they have difficulty reading what is inside them. These kind of files often trigger alerts by security software using heuristic detection
because they are resistant to scanning (difficult to read). This resistance may also result in some scanners to stall (hang) on these particular types of files or just ignore (skip) them. Certain files in the System Volume Information Folder
like the Tracking.log (created by the Distributed Link Tracking Service to store maintenance information) have also been reported as a source causing some scanners to hang.