Scam calls in San Mateo County, scammers use false law enforcement titles to pressure residents

San Mateo County, California – San Mateo County residents are being urged to treat unexpected legal-sounding phone calls with caution after the Sheriff’s Office reported a recent increase in scam activity targeting community members.

According to the warning, some people have been receiving calls from an individual claiming to be “Sergeant O’Malley” and saying they need to discuss legal matters. Authorities say the calls are fraudulent and should not be trusted. The message from the Sheriff’s Office is direct: this is a scam, and residents should not mistake the caller’s tone or title for legitimacy.

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The concern is not only that the caller is using a false identity, but that the approach appears designed to create fear and pressure. By invoking legal trouble, scammers often try to push people into reacting quickly, before they have time to think clearly or verify what they are being told. That is why officials are reminding the public that the San Mateo County Sheriff’s Office will never call by phone to demand payment or threaten arrest over legal matters.

That point sits at the center of the alert. No matter how convincing the caller may sound, residents are being told not to engage, not to answer questions, and not to share anything personal. Financial details, banking information, account numbers, and identifying records should never be handed over in response to an unsolicited call. Even brief interaction can give scammers an opening to manipulate or pressure a potential victim.

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The Sheriff’s Office is encouraging people who receive a call like this to take simple, immediate steps. Do not provide any personal or financial information. Hang up right away. If there is concern that money or sensitive information may already have been shared, residents are asked to report it by calling the Sheriff’s Office at 650-363-4911.

The warning also serves as a broader reminder that scam tactics continue to evolve, often by borrowing the names, ranks, or language of trusted institutions. What makes these schemes dangerous is their ability to sound official while being entirely false. In moments like this, caution becomes one of the strongest forms of protection.

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Officials say public awareness can make a real difference. By sharing the alert with family members, friends, and neighbors, especially those who may be more vulnerable to this kind of pressure, the community can help limit the reach of the scam and reduce the risk of further victims. The Sheriff’s Office says protecting public trust and safety remains a top priority.