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Security And You
Secure Online Banking. Powered by Citi.
At Citibank, we're constantly updating our security technology to protect your privacy and confidentiality. It is as important that you take the necessary measures to safeguard yourself.
To ensure your online banking sessions are secure, Citibank recommends that you follow these simple security tips.
TipsCitibank SecurityYour RoleEmail FraudReporting
Do Not Use Public Or Shared Computers:
  • You are responsible for keeping your PIN confidential. You should not use public or shared computers like those in Internet Cafes or even computers belonging to someone else for Internet banking, you may be open to harmful or specific software programs housed within these computers, which could capture your personal information.
Bank Safely Online:
  • Always enter the Citibank website address "http://www.citibank.com.sg" , "www.citigold.com.sg" or "www.citibank.com.sg/commercial" directly into your browser address bar before you login to ensure that you are on the legitimate Citibank website.
  • Check that the bank's website address changes from http:// to https:// and a security icon that looks like a lock or key appears at the bottom of the webpage when authentication and encryption is expected.
  • You can click on the lock icon at the bottom of the webpage to review the Secure Sockets Layer (SSL) certificate information. The certificate should be issued to www.citibank.com.sg , www.citigold.citibank.com.sg or www.citibank.com.sg/commercial
  • Click log out when you have finished your banking session. Do not just close your browser window.
  • Update the bank when you change your contact details. This will enable us to contact you in a timely manner if we detect unusual transactions.
  • If you hold a Citibank banking account, check your accounts on a regular basis and contact Citibank immediately at our 24-hour CitiPhone Banking at
    (65) 6225-5225 should you encounter any difficulties or irregularities.
  • If you hold a Commercial Bank account, check your accounts on a regular basis and contact Citibank immediately at our 24-Hour Commercial Bank Hotline at (65) 6238-8833 should you encounter any difficulties or irregularities.
How to Protect Your PIN:
  • Your PIN should be at least 6 digits or 6 alphanumeric characters, without repeating any digit or character more than once.
  • Your PIN should not be based on a user-id, personal telephone number, birthday or other personal information.
  • You should memorise your PIN and not record it anywhere.
  • You should change your PIN regularly.
  • Always enter the Citibank website address "http://www.citibank.com.sg" or "www.citigold.com.sg or www.citibank.com.sg/commercial" directly into your browser address bar before you login to ensure that you are on the legitimate Citibank website.
  • Click log out when you have finished your banking session. Do not just close your browser window.
  • You should use a separate PIN for online banking and for logging into other non-banking websites.
  • You should not use the same digit more than twice in your PIN.
  • Ensure that no one is watching you while you key in your PIN or any other sensitive information. Do not share your PIN or make it accessible to others.
  • You should NOT reveal your PIN to anyone even if they purport to be a staff member of Citibank.
  • Check your accounts on a regular basis and contact Citibank immediately at our 24-hour CitiPhone Banking at 6225-5225 should you encounter any difficulties or irregularities.
One-Time PIN (OTP):
  • You should not allow anyone to keep, use or tamper with your Online Security Device(OSD).
  • You should not reveal the OTP generated by your OSD to anyone.
  • You should not divulge the serial number of your security token to anyone.
  • If you hold a Citibank banking account, you should update the bank immediately when you misplace your mobile phone or change your mobile number.
  • If you hold a Commercial Bank account, you should update the bank immediately when you misplace your OSD.
Protecting Your Computer
  • Do not select the option auto save on browsers for storing or retaining user name and password when logging into online banking
  • Make sure your computer has the most current anti-virus software. Anti-virus software needs frequent updates to guard against new viruses. Make sure you download the anti-virus updates as soon as you are notified that a download is available.
  • Make sure your computer's Operating System and browser software is updated with the latest security patches
  • Install a personal firewall and the latest anti virus software to help prevent unauthorized access to your home computer, particularly when they are linked via broadband connections, digital subscriber lines or cable modems. Be sure to update the anti-virus and firewall products with security patches or newer versions on a regular basis
  • Clear your browser's cache and history after each session so that your account information is removed, especially if you are using a shared computer.
  • If you are using a Windows OS, ensure File & Print sharing is disabled while online, particularly if you are linked to the Internet via any broadband connection, digital subscriber lines or cable modems.
  • Make regular backups of critical data.
  • Consider the use of encryption technology to protect highly sensitive data.
Wireless Networks
  • You should set a password for your wireless point. This will prevent unauthorised users from accessing and using your wireless connection.
  • Disable broadcasting to your network name (SSID-Service Set Identifier) to prevent casual surfers from detecting and connecting to your wireless network.
  • You should use encryption on data transmission to protect your wireless network.
  • You should allow only registered machines for your wireless network.
Beware Of Scam Emails:
  • A fraudulent (a.k.a. spoofing, impostor, or phishing) e-mail is one that has been forged. It usually tricks you into providing sensitive personal information either on the spot (e.g. by replying to the e-mail) or including links to a fake website that tries to get you to disclose personal data or log in. See examples of scam emails on citibank.com.
  • Do not disclose personal, financial or credit card information to little known or suspect websites.
  • Do not open email attachments from strangers or install software or run programs of an unknown origin.
  • Under no circumstances will Citibank ever send you an email asking for your personal information. You should NOT respond to such email or reveal your PIN to anyone.
Beware Of Spyware:
  • Spyware is a piece of software inserted in your computer that collects information about you and your Internet traffic.
    It is stored in your PC (with / without your consent) when you download software, games, screensavers, etc from the Web. It usually claims to be able to improve your computer's performance.
  • Spyware can be used maliciously to gain access to your passwords, PINs, card numbers and Internet browsing history.
    They can also be used to scan files on your hard drive and slow down your computer by consuming system resources leading to system instability or a crash.
  • Do not log in to Citibank Online while such software is installed on your computer.
    If you have installed any software that claims to speed up your internet connection, or have additional third-party toolbars on your browsers, then you may be using software that has the ability to track your internet sessions. We recommend that you uninstall such software.
Find out more about Citibank's One-Time PIN (OTP)
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