References 380% CONFIDENCEOverall confidence: 80%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

• [1]80%
  Cisco Newsroom: Cisco Completes Acquisition of Sourcefire

  newsroom.cisco.com· Published Oct 7, 2013· Starts Oct 7, 2013 ✓· 0% of score

  Cisco's newsroom release is dated 7 October 2013.

• [2]80%
  TechCentral: Cisco completes $2.7bn Sourcefire purchase

  techcentral.ie· Added Nov 12, 2026· 50% of score

  Opened and read; states the date and figures used in this pin.^[1]

• [3]80%
  Global Security Mag: Cisco Completes Acquisition of Sourcefire

  globalsecuritymag.com· Added Nov 12, 2026· 50% of score

  Opened and read; states the date and figures used in this pin.^[1]

Suggest a correction

Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most. A picture that shows something else, or shows it badly, is looked at too, and moved down or replaced.