FBI Warns Consumers of New Telephone Attacks, 6/22/2010
Fraudulent Telephone Calls Allowing Fraudsters Access to Consumer Financial and Brokerage Accounts
The FBI Newark Division released a warning to consumers concerning a new scheme using telecommunications denial-of-service (TDoS) attacks.
The FBI determined fraudsters compromised victim accounts and contacted financial institutions to change the victim profile information (i.e. email addresses, telephone numbers and bank account numbers).
The TDoS attacks used automated dialing programs and multiple accounts to overwhelm victims' cell phones and land lines with thousands of calls. When victims answered the calls they heard dead air (nothing on the other end), an innocuous recorded message, advertisement, or a telephone sex menu. Calls were typically short in duration but so numerous that victims changed their phone numbers to terminate the attack.
These TDoS attacks were used as a diversion to prevent financial and brokerage institutions from verifying victim account changes and transactions. Fraudsters were afforded adequate time to transfer funds from victim brokerage and financial online accounts.