Insider threats arise from careless users, users with compromised credentials, or users who seek to cause harm intentionally.
The latter type of user—the malicious insider—can be the most daunting for security teams to manage. It requires them to analyze a user’s behavior and determine whether they have bad intentions. Although less frequent, malicious insiders are costly. The average cost of a data breach by a malicious insider is the highest of any attack vector at $4.9 million, which is 9.6% higher than the global average.
Read more…
Source: Proofpoint
Related:
- Dutch police arrest ‘security researcher’ in ShinyHunters probe
September 29, 2026
Dutch police have arrested a 24-year-old man on suspicion of involvement with the prolific ShinyHunters cybercrime group. Cops announced the arrest on Monday night and said the Amsterdam resident would appear before judges at Rotterdam District Court today (Tuesday). Officers have not named the suspect. However, a company has identified a person they believe to be the ...
- Trump administration subpoenas New York Times journalists over new Air Force One reporting
July 11, 2026
The Trump administration has issued subpoenas to several New York Times journalists after the newspaper reported on security concerns with the president’s new plane. The Times said its journalists were subpoenaed on Friday by the US justice department to testify before a federal grand jury in Manhattan five days later, marking the latest effort by the Trump White ...
- Florida ransomware negotiator convicted for helping ransomware gang extort US companies
July 10, 2026
Florida man Angelo Martino has been sentenced to more than five years in prison for conspiring with hackers to deploy ransomware during his job as a ransomware negotiator for a U.S. cybersecurity company. The U.S. Department of Justice confirmed the sentence on Thursday, noting that the government seized more than $10 million worth of cryptocurrency and assets. Martino ...
- Disgraced US gov software contractor found guilty of database destruction
May 8, 2026
A Virginia man, Sohaib Akhter, faces decades in prison after a jury convicted him of being involved in a scheme to delete approximately 96 databases containing US government data. The events of the case transpired around two weeks before the twin brothers allegedly involved were fired from their jobs at a software supplier to the US ...
- Employees are now more dangerous to their company than external hackers
May 4, 2026
New data from Orange Cyberdefense has suggested the biggest risks companies face could now be coming from inside, with internal threats rising from 47% to 57% in the space of less than a year. For the first time ever, internal threats have become more common that external ones, with hacking remaining pretty steady at 31% of ...
- Disgruntled researcher releases second major Windows zero-day
April 17, 2026
The same disgruntled researcher who recently disclosed a zero-day vulnerability in Windows has now done it again, this time targeting Microsoft Defender, the operating system’s native antivirus solution. A researcher with the alias “Chaotic Eclipse” has posted a proof-of-concept (PoC) exploit for a vulnerability they named “RedSun”. It is a local privilege escalation flaw that allows ...