1. /
  2. Security Response/
  3. OSX.Tsunami


Risk Level 1: Very Low

October 26, 2011
October 27, 2011 4:20:38 AM
Infection Length:
42,348 bytes
Systems Affected:
Mac OS X
OSX.Tsunami is a Trojan horse that opens a back door on the compromised computer.

Note: This threat is based on Linux.Backdoor.Kaiten.

Antivirus Protection Dates

  • Initial Rapid Release version October 26, 2011 revision 019
  • Latest Rapid Release version February 19, 2013 revision 016
  • Initial Daily Certified version October 26, 2011 revision 025
  • Latest Daily Certified version August 30, 2012 revision 002
  • Initial Weekly Certified release date October 26, 2011
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Medium
  • Payload: Opens a back door.


  • Distribution Level: Low
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Nino Fred Gutierrez

Search Threats

Search by name
Example: W32.Beagle.AG@mm
STAR Antimalware Protection Technologies
Internet Security Threat Report