Business email compromise is when a criminal gets into, or imitates, a mailbox to redirect payments. For Denver 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 Denver
Aerospace and space suppliers in the south and west suburbs need CMMC preparation. Construction and engineering firms in the Denver Tech Center and Golden need CAD and plan sharing that works everywhere. Healthcare and nonprofit offices across the city need secure, budget-friendly IT.
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.
Colorado data rules to know
Colorado’s data security law, C.R.S. 6-1-716, requires notice to affected residents within 30 days of a breach, and to the Attorney General when 500 or more Coloradans are affected. The Colorado Privacy Act adds consumer rights for larger data holders.
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 Denver
Office hours for Denver clients are Monday to Friday, 8:00 AM to 5:00 PM Mountain. Email security services is part of full managed IT for Denver 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 Denver.