A national advisory has been issued by federal officials regarding cyber threats to public water systems. This warning comes after multiple utilities in Minnesota were recently targeted in cyber incidents. The advisory serves as a warning to utilities across the country, including those in the San Francisco area.

Further details about the advisory and the cyber incidents in Minnesota are available from federal officials and news sources such as KTVU FOX 2 News. For more information on the national advisory and its implications for local water systems, readers can refer to the original report from KTVU FOX 2 News.