This week’s HarrisFCS cyber brief highlights three practical reminders for small professional firms: use CISA’s Known Exploited Vulnerabilities catalog to prioritize patching, train staff to avoid ClickFix-style fake verification prompts, and keep IRS Publication 4557 WISP documentation connected to real controls like endpoint protection, patch management, and staff training. HarrisFCS helps small tax, healthcare, and professional firms turn daily cyber risk into practical safeguards.