Business email compromise is when a criminal gets into, or imitates, a mailbox to redirect payments. For San Diego firms that send invoices, pay vendors or move client funds by wire, one convincing email can cost more than a year of IT.
Who gets targeted in San Diego
Navy and defense suppliers around San Diego need CMMC preparation. Life sciences companies in Sorrento Valley and Torrey Pines handle sensitive research data. Engineering and manufacturing firms in Kearny Mesa and Carlsbad need CAD support and stable networks.
Firms like these send and receive payments by email every week, which is exactly what attackers look for.
How mailbox takeovers start
A stolen password, a fake login page or a look-alike domain lets an attacker read mail, set hidden forwarding rules and send payment requests that look real.
Locking down Microsoft 365
Multi-factor authentication, conditional access, safe sign-in settings and mail flow rules close the common ways in. Filtering catches look-alike domains and malicious links before they reach the inbox.
California data rules to know
California’s privacy laws, including the CCPA, give residents rights over their personal information and raise the stakes of a breach.
A hacked mailbox often holds customer records, so an email takeover can become a reportable breach.
Watching for takeover signs
We monitor for suspicious sign-ins, new forwarding rules, account changes and unusual sending patterns. During office hours an engineer acts on alerts by locking the account, resetting credentials and checking what was sent.
Office hours in San Diego
Office hours for San Diego clients are Monday to Friday, 8:00 AM to 5:00 PM Pacific. Email security services is part of full managed IT for San Diego clients, delivered remote-first with on-site help coordinated when it is needed.
Read more about email security services or see all IT services in San Diego.