#security
Protect your financial data with security best practices and tools
CIRCIA requires covered entities to report substantial cyber incidents to CISA within 72 hours and ransomware payments within 24 hours, with the final rule expected in fall 2026 and coverage reaching an estimated 300,000-plus organizations across 16 critical infrastructure sectors.
The FBI's IC3 logged $3.05 billion in business email compromise losses in 2025, and only 25% of small businesses have a whistleblower reporting mechanism versus 85% of large companies — here's how vendor impersonation, payroll diversion, and check fraud unfold, and the controls that stop them before a wire goes out.
An estimated 20% of all Bitcoin is permanently inaccessible because owners died without sharing private keys — a practical guide to inventorying domains, crypto wallets, and cloud accounts under RUFADAA before a crisis forces the issue.
On July 1, 2026, Connecticut lowered its privacy law threshold to 35,000 residents, Arkansas banned targeted ads to minors under ACTOPPA, and Utah added a data correction right, pulling more small businesses into scope than ever before.
A federal court injunction and a CFPB reversal have frozen the Personal Financial Data Rights rule (Section 1033), leaving small businesses uncertain whether bank-feed access to accounting, lending, and cash-flow tools will stay free, secure, and reliable.
PCI DSS 4.0's transition period ended March 31, 2025, so every merchant assessment from 2026 onward now enforces mandatory payment-page script monitoring, MFA for all cardholder-data access, and authenticated internal vulnerability scans — noncompliance risks $5,000-$100,000 monthly fines from acquiring banks plus an average $173,692 added breach cost per IBM's research.
The FBI logged over 22,000 reports of AI voice or video fraud with nearly $893 million in losses in a single recent year; callback verification on a separate channel, a rotating code word, and a dollar-threshold second approver are the three no-cost controls that stop deepfake wire-transfer fraud.
Every US state has its own data breach notification law, with individual-notice deadlines ranging from 30 days (California, Colorado, Florida, New York, Washington) to 60 days (Connecticut, Texas), and small businesses must comply with the law of every state where an affected person lives, not just their home state.
Business email compromise cost U.S. victims over $3 billion in reported losses in 2025, and 86% of it moves by wire or ACH. Six accounts payable controls — callback verification, dual approval, vendor master file locks — stop fraudulent transfers before the money leaves.
Connect your Beancount.io ledger to Claude, Cursor, and compatible AI clients. Query spending, reconcile accounts, and preview ledger edits.
A 72-hour response playbook for small business owners facing EIN-based tax fraud, registered agent hijacking, or payroll account takeover — including how to file IRS Form 14039-B, place fraud alerts at Dun & Bradstreet, Experian Business, and Equifax Small Business, and harden IRS, Secretary of State, banking, and payroll footprints year-round.
California's SB 53 (Transparency in Frontier AI Act) took operative effect on January 1, 2026, requiring foundation model developers training above 10^26 FLOPs to publish safety frameworks, report critical incidents to Cal OES within 15 days (24 hours for imminent threats), maintain anonymous whistleblower channels, and face civil penalties up to $1 million per violation enforced by the California Attorney General.
