EI-ISAC Reports Limited Threat Activity on 2026 Election Day
Summary
EI-ISAC reported limited cyber, physical and disruptive activity on Nov. 3, 2026, with no major disruptions. Election offices saw unsuccessful probing and password guessing, plus website flooding; adding a CAPTCHA reduced traffic.
Key points
- EI-ISAC said threat activity was limited and consistent with expectations; most incidents were resolved quickly, with no major disruptions.
- One election office reported unsuccessful automated website probing; password guesses from one internet address also failed.
- Website flooding targeted election-related pages. One office added a CAPTCHA, after which traffic dropped.
- CIS’s Security Operations Center identified five incidents and escalated them to three election offices for investigation and response.
- Physical reports included vandalism, polling-place disruptions, suspicious packages, bomb and shooting threats, and threats against candidates.
- No foreign adversary information operations were reported or being tracked.
- Officials addressed other election challenges—including misinformation, equipment problems, service outages, and flooding—with backup plans and public updates.
Article Details
- Publisher
- Center for Internet Security (CIS) / Elections Infrastructure Information Sharing and Analysis Center (EI-ISAC)
- Report Period
- 2026-11-03
- Scope
- Cyber, physical, and disruptive activity reported or observed during Election Day, including operational challenges affecting election offices.
- Sample Size
- Over 7,000 election officials were enrolled and able to participate in the Situation Room; incident counts reflect reports and observations, not a stated comprehensive sample.
- Key Statistics
- Over 7,000 election officials were enrolled and able to participate in the Situation Room.
- The CIS Security Operations Center identified five incidents and escalated them to three election offices.
- Three bomb threats and two shooting threats targeted polling locations.
- Voting hours were extended at five precincts across four counties in one state.
- Flooding forced polling-place relocations in at least seven counties in one state.
- Recommendations
- Election officials are encouraged to continue sharing unusual activity with the EI-ISAC.