Virus Detection and Prevention Tips
- Do not open any files attached to an email from an unknown, suspicious or untrustworthy source.
- Do not open any files attached to an email unless you know what it is, even if it appears to come from a dear friend or someone you know. Some viruses can replicate themselves and spread through email. Better be safe than sorry and confirm that they really sent it.
- Do not open any files attached to an email if the subject line is questionable or unexpected. If the need to do so is there always save the file to your hard drive before doing so.
- Delete chain emails and junk email. Do not forward or reply to any to them. These types of email are considered spam, which is unsolicited, intrusive mail that clogs up the network.
- Do not download any files from strangers.
- Exercise caution when downloading files from the Internet. Ensure that the source is a legitimate and reputable one. Verify that an anti-virus program checks the files on the download site. If you're uncertain, don't download the file at all or download the file to a floppy and test it with your own anti-virus software.
- Update your anti-virus software regularly. Over 500 viruses are discovered each month, so you'll want to be protected. These updates should be at the least the products virus signature files. You may also need to update the product's scanning engine as well.
- Back up your files on a regular basis. If a virus destroys your files, at least you can replace them with your back-up copy. You should store your backup copy in a separate location from your work files, one that is preferably not on your computer.
- When in doubt, always err on the side of caution and do not open, download, or execute any files or email attachments. Not executing is the more important of these caveats. Check with your product vendors for updates which include those for your operating system web browser, and email. One example is the security site section of Microsoft located at http://www.microsoft.com/security.
- If you are in doubt about any potential virus-related situation you find yourself in, you may report a virus to csstaff@cs.princeton.edu.
Email Phishing and Pharming Tips
You've probably heard about identity theft — people stealing other people's personal information to use for illegal purposes. In a new tactic called "phishing," ID thieves trick people into providing their social security numbers, financial account numbers, PIN numbers, mothers' maiden names, and other personal information by pretending to be someone they're not. Avoid getting hooked by a phisher by knowing what to look for and taking basic security precautions.
- Watch out for "phishy" emails. The most common form of phishing is emails pretending to be from a legitimate retailer, bank, organization, or government agency. The sender asks to "confirm" your personal information for some made-up reason: your account is about to be closed, an order for something has been placed in your name, or your information has been lost because of a computer problem. Another tactic phishers use is to say they're from the fraud departments of well-known companies and ask to verify your information because they suspect you may be a victim of identity theft! In one case, a phisher claimed to be from a state lottery commission and requested people's banking information to deposit their quot;winnings" in their accounts.
- Don't click on links within emails that ask for your personal information. Fraudsters use these links to lure people to phony Web sites that looks just like the real sites of the company, organization, or agency they're impersonating. If you follow the instructions and enter your personal information on the Web site, you'll deliver it directly into the hands of identity thieves. To check whether the message is really from the company or agency, call it directly or go to its Web site (use a search engine to find it).
- Beware of "pharming." In this latest version of online ID theft, a virus or malicious program is secretly planted in your computer and hijacks your Web browser. When you type in the address of a legitimate Web site, you're taken to a fake copy of the site without realizing it. Any personal information you provide at the phony site, such as your password or account number, can be stolen and fraudulently used.
- Never enter your personal information in a pop-up screen. Sometimes a phisher will direct you to a real company's, organization's, or agency's Web site, but then an unauthorized pop-up screen created by the scammer will appear, with blanks in which to provide your personal information. If you fill it in, your information will go to the phisher. Legitimate companies, agencies and organizations don't ask for personal information via pop-up screens. Install pop-up blocking software to help prevent this type of phishing attack.
- Protect your computer with spam filters, anti-virus and anti-spyware software, and a firewall, and keep them up to date. A spam filter can help reduce the number of phishing emails you get. Anti-virus software, which scans incoming messages for troublesome files, and anti-spyware software, which looks for programs that have been installed on your computer and track your online activities without your knowledge, can protect you against pharming and other techniques that phishers use. Firewalls prevent hackers and unauthorized communications from entering your computer ‚ which is especially important if you have a broadband connection because your computer is open to the Internet whenever it's turned on. Look for programs that offer automatic updates and take advantage of free patches that manufacturers offer to fix newly discovered problems. Go to www.onguardonline.gov and www.staysafeonline.org to learn more about how to keep your computer secure.
- Only open email attachments if you're expecting them and know what they contain. Even if the messages look like they came from people you know, they could be from scammers and contain programs that will steal your personal information.
- Know that phishing can also happen by phone. You may get a call from someone pretending to be from a company or government agency, making the same kinds of false claims and asking for your personal information.
- If someone contacts you and says you've been a victim of fraud, verify the person's identity before you provide any personal information. Legitimate credit card issuers and other companies may contact you if there is an unusual pattern indicating that someone else might be using one of your accounts. But usually they only ask if you made particular transactions; they don't request your account number or other personal information. Law enforcement agencies might also contact you if you've been the victim of fraud. To be on the safe side, ask for the person's name, the name of the agency or company, the telephone number, and the address. Get the main number from the phone book, the Internet, or directory assistance, then call to find out if the person is legitimate.
- Job seekers should also be careful. Some phishers target people who list themselves on job search sites. Pretending to be potential employers, they ask for your social security number and other personal information. Follow the advice above and verify the person's identity before providing any personal information.
- Be suspicious if someone contacts you unexpectedly and asks for your personal information. It's hard to tell whether something is legitimate by looking at an email or a Web site, or talking to someone on the phone. But if you're contacted out of the blue and asked for your personal information, it's a warning sign that something is "phishy." Legitimate companies and agencies don't operate that way.
- Act immediately if you've been hooked by a phisher. If you provided account numbers, PINS, or passwords to a phisher, notify the companies with whom you have the accounts right away. For information about how to put a "fraud alert" on your files at the credit reporting bureaus and other advice for ID theft victims, contact the Federal Trade Commission's ID Theft Clearinghouse, www.consumer.gov/idtheft or 877-438-4338, TDD 202-326-2502.
- Report phishing, whether you're a victim or not. Tell the company or agency that the phisher was impersonating. You can also report the problem to law enforcement agencies through the National Fraud Information Center/Internet Fraud Watch, www.fraud.org or 800-876-7060, TDD 202-835-0778. The information you provide helps to stop identity theft.