How SNS Accounts Get Hijacked and How to Prevent It

About 11 min read

One morning you open Instagram and find posts you never made. Your friends are getting strange DMs from your account asking them to click a link. Your password no longer works. This is what an SNS account hijack looks like - and it happens to thousands of people every day. This guide explains how hijackers steal accounts, what damage they cause, and most importantly, how you can protect yourself. Whether you use Instagram, X, TikTok, or any other platform, the steps in this article will help you lock down your accounts before someone else takes control. You will also learn about two-factor authentication, one of the most effective defenses against hijacking.

What Happens When Your SNS Account Gets Hijacked?

Posts Are Made Without Your Permission

The first thing a hijacker does is make your account "theirs." They change the password, swap out the registered email address, and lock you out. Then they start posting from your account. Common posts include ads for shady shopping sites or "easy money" scam posts. Your followers trust these posts because they think you made them. In 2024, a high school student's Instagram account was hijacked and over 20 fake brand merchandise ads were posted in a single day.

Scam Messages Are Sent to Your Friends

The worst part of a hijack is that the damage spreads to your friends. The hijacker sends DMs (direct messages) to all your friends from your account. Messages like "Check out this link!" "You won a gift card!" or "Log in right away!" Your friends think the message is from you, click the link, and enter their own passwords. This is called phishing, and once one account is hijacked, friends' accounts get taken over one after another in a chain reaction. In one case at a middle school, one student's hijacked account led to 8 classmates in the same class falling victim in a chain.

Common Hijacking Methods

Phishing and Password Reuse

The most common hijacking method is phishing. You receive a DM or email saying "Suspicious login detected on your account. Verify now" or "You violated our terms of service. Confirm within 24 hours or your account will be suspended." When you panic and click the link, a login page that looks exactly like the real one appears. If you enter your password there, that information goes straight to the hijacker. These fake pages are so well-made that they are nearly impossible to tell apart from the real Instagram or X login pages, so always check the URL carefully. Legitimate pages start with "instagram.com" or "x.com," while fakes use confusing addresses like "instagram-security-check.com." For a deeper dive into recognizing and defending against phishing, see our phishing protection guide.

The other major cause is password reuse. For example, imagine a gaming site has a data breach. If the email and password combination you used for that game is the same as your Instagram login, what happens? Hijackers take the leaked data and try logging into Instagram, X, TikTok, email, and every other service they can find. This is different from session hijacking, but the result is the same - your account gets stolen. Just one password leak from one service puts all your accounts at risk. That is why using a different password for each service is the absolute foundation of hijack prevention.

How to Prevent Hijacking

Set Up Two-Factor Authentication

The most effective way to prevent hijacking is to enable two-factor authentication (2FA). When you set up 2FA, an extra verification step is added after entering your password. Even if your password leaks, no one can log in without clearing the second step. To learn more about how 2FA works and the different types available, check out our two-factor authentication guide. Here is how to set it up on major social media platforms.

For Instagram, open the menu (three-line icon) at the top right of your profile, then tap "Settings and privacy" then "Accounts Center" then "Password and security" then "Two-factor authentication." Choosing an authenticator app (like Google Authenticator) is recommended. You can also use SMS (text messages), but authenticator apps are more secure.

For X (formerly Twitter), tap your profile icon at the top left, then go to "Settings and Support" then "Settings and privacy" then "Security and account access" then "Security" then "Two-factor authentication." Since 2023, X removed SMS authentication for free users, so you need to use an authenticator app. For TikTok, open the menu (three-line icon) at the top right of your profile, then tap "Settings and privacy" then "Security" then "2-step verification." You can choose SMS or an authenticator app. On any platform, setup takes less than 5 minutes. Just 5 minutes of work dramatically improves your account security.

What to Do If Your Account Is Hijacked

A Calm Step-by-Step Checklist

If your account gets hijacked, do not panic. By following these steps in order, you can minimize the damage. First, change your password. If you can still log in, change it immediately from the settings. If you cannot log in, use the "Forgot password" link to reset it using your registered email or phone number.

Next, log out of all sessions. On Instagram, go to "Settings and privacy" then "Accounts Center" then "Password and security" then "Where you're logged in" and log out all sessions except your current one. X and TikTok have similar features. This forcefully disconnects the hijacker's active session.

Finally, report to the platform. On Instagram, go to "Settings and privacy" then "Help" then "Report a problem." On X, go to "Settings and Support" then "Help Center." If the hijacker changed your email address and you cannot reset your password yourself, reporting to the platform is your only way to recover the account. You may be asked for a photo ID for verification. Also, let your friends know through other means (like LINE or a phone call) that your account was hijacked and not to open any DMs from you. For a comprehensive response plan covering accounts beyond social media, our personal incident response guide is a helpful resource.

What You Can Do Right Now

1. Enable two-factor authentication on Instagram, X, and TikTok right now. It takes 5 minutes from the "Security" section in settings
2. Check if the passwords you use for social media are the same as other services. If any match, change them immediately
3. When you receive DMs or emails asking you to "log in," make it a habit to open the app yourself instead of clicking the link
4. Generate different strong passwords for each service with Passtsuku.com. If you cannot remember them all, use a password manager

To learn more about protecting your online accounts, SNS security guides (Amazon) offer practical tips you can apply today.

Frequently Asked Questions

Should I report a hijacking to the police?

If there is financial damage or if fraud through impersonation is spreading, reporting to the police is recommended. In Japan, you can consult the "Cyber Crime Consultation" desk at your prefectural police. Filing a report may lead to an investigation. Even without financial damage, having a record can help if damage is discovered later.

Is a private account safe from hijacking?

Setting your account to private does not change the risk of hijacking. A private setting only limits who can see your posts - if your password leaks, someone can still log in. Phishing messages arrive via DMs and email regardless of whether your account is public or private. Do not let a private setting give you a false sense of security. Always set up two-factor authentication and avoid reusing passwords.

What is the hijacker's goal?

Hijackers have three main goals. First is spreading scams - they use your account to send phishing messages to your friends and hijack even more accounts. Second is posting ads and spam - they promote fake shopping sites and shady services to your followers. Third is demanding ransom - some hijackers contact you saying "pay up if you want your account back." In all cases, your account is just a "tool" for the hijacker.