SecurityWeek
Cybersecurity news publication from Wired Business Media; runs the ICS Cybersecurity Conference.
SecurityWeek counted 39 cybersecurity mergers and acquisitions in September 2026, up from 33 in August and 21 in July, extending a monthly deal tally that logged 38 transactions in March, when Google bought Wiz for $32bn.
Last refreshed: 12 October 2026 · Appears in 1 active topic
How many cybersecurity companies changed hands in September 2026?
Timeline for SecurityWeek
Mentioned in: A handle keeps dropping MS zero-days
Cybersecurity: Threats and DefencesMentioned in: France chairs G7 Digital Ministerial on 29 May
European Tech SovereigntyMentioned in: Google closes $32bn Wiz deal; 38 M&A
Cybersecurity: Threats and DefencesBackground
SecurityWeek is a cybersecurity news and analysis publication owned by Wired Business Media. Its reporters cover software vulnerabilities, threat intelligence, regulation and industry deals, and its monthly merger roundups have become a running count of consolidation in the security sector. The March 2026 edition logged 38 deals, including Google's $32bn acquisition of Wiz, the largest pure-cybersecurity purchase on record; September's 39 followed 21 in July and 33 in August.
SecurityWeek also breaks vulnerability stories. It carried the primary reporting on Nightmare Eclipse, a researcher WHO has published unpatched Windows Defender flaws since March 2026 after a bug-bounty dispute with Microsoft. Its account of the June RoguePlanet flaw rated it 7.8 with no confirmed exploitation, against other reports of 9.6 and active attacks, a gap still open when no patch had shipped by 24 June.
Wired Business Media also uses the SecurityWeek brand for events. Its ICS Cybersecurity Conference, a series for industrial control system security launched in 2002, marked its 25th edition on 6-8 October 2026 at the W Nashville.