Do not open e-mail from unknown sources. Be suspicious of e-mails purporting to be from a financial institution, government department, or other agency requesting account information, account verification, or banking access credentials such as usernames, passwords, PIN codes, and similar information. Opening file attachments or clicking on web links in suspicious e-mails could expose your system to malicious code that could hijack your computer. Never respond to a suspicious e-mail or click on any hyperlink embedded in a suspicious e-mail. Call the purported source if you are unsure who sent an e-mail. If an e-mail claiming to be from your financial organization seems suspicious, checking with your financial organization may be appropriate.