Versions

8.3.0.6	4.23%
8.1.1.2	0.70%
8.0.6.4	5.99%
8.0.5.5	0.70%
8.0.1.1	2.46%
8.0.0.139	2.82%
8.0.0.137	0.35%
8.0.0.117	0.35%
7.8.0.10	14.08%
7.7.0.9	4.58%
7.6.1.4	8.10%
7.6.0.7	25.00%
7.5.0.12	22.89%
7.1.2.6	2.82%
7.1.1.5	0.35%
7.1.0.53	0.70%
6.6.3.3	0.70%
6.6.2.6	1.06%
6.6.0.10	0.70%
6.4.3.3	0.35%
6.4.1.3	0.35%
6.1.5.8	0.35%
6.1.1.28	0.35%

bhengine.dll has 23 known versions, the most recent one is 8.3.0.6. The average file size is about 1.72 MB. It is an authenticode code-signed executable issued to Symantec Corporation by the certification authority VeriSign.

Norton Internet Security, by Symantec Corporation, is a PC program that provides malware prevention and removal during subscription period and uses signatures and heuristics to identify viruses, trojans and other malware. Norton Internet Security features include a email spam filtering, personal firewall, and phishing protection.