[BradleyT]

Activity that isn't normal. So if you don't regularly get 10K in from account xxx you'll probably get flagged.

Here are some FinCEN guidelines that may trigger unusual activity.

Examples of some common patterns of suspicious activity are:
• a lack of evidence of legitimate business activity, or any business operations at all,
undertaken by many of the parties to the transaction(s);
• unusual financial nexuses and transactions occurring among certain business types (e.g.,
food importer dealing with an auto parts exporter);
• transactions that are not commensurate with the stated business type and/or that are
unusual and unexpected in comparison with the volumes of similar businesses operating
in the same locale;
• unusually large numbers and/or volumes of wire transfers and/or repetitive wire transfer
patterns;
• unusually complex series of transactions indicative of layering activity involving multiple
accounts, banks, parties, jurisdictions;
• suspected shell entities;
• bulk cash and monetary instrument transactions;
• unusual mixed deposits of money orders, third party checks, payroll checks, etc., into a
business account;
• transactions being conducted in bursts of activities within a short period of time,
especially in previously dormant accounts;
• transactions and/or volumes of aggregate activity inconsistent with the expected purpose
of the account and expected levels and types of account activity conveyed to the financial
institution by the accountholder at the time of the account opening;
• beneficiaries maintaining accounts at foreign banks that have been subjects of previous
SAR filings;
• parties and businesses that do not meet the standards of routinely initiated due diligence
and anti-money laundering oversight programs (e.g., unregistered/unlicensed businesses);
• transactions seemingly designed to, or attempting to avoid reporting and recordkeeping
requirements;