San Diego County officials are investigating a possible cyberattack against the county's main website on Tuesday (June 5) during the California primary election.
According to the San Diego County News Center, the public-facing site, sdcounty.ca.gov, was hit by what appears to have been a denial-of-service attack, beginning about 8:15 p.m. The influx of Web traffic, from a single, unknown IP address, sent more than 1 million hits per minute and prompted the site's firewall to close off access to all county websites, including the county's voting site, sdvote.com. The sites were put back online at 9:56 p.m.
A call to San Diego County's technology department was not returned.
San Diego County said the apparent DDoS attack "did not affect ballot counting or other election processing," but did prevent access to the voting results. Internally, the sites functioned properly and county employees were able to provide election information to the public.
Hewlett-Packard, which provides information-technology services to San Diego County, confirmed that the county website did not crash or fail, and that its built-in security systems succeeded in detecting and blocking suspicious traffic.