Due to limitations in SMS technology, sender names can be easily spoofed. This means fraudulent messages can appear right alongside your real OKX alerts—such as those for login activity or withdrawals—making it difficult to tell the difference at first glance.This manipulation of SMS sender ID is what makes these phishing attempts particularly dangerous and effective.How does phishing SMS work?

Check storage space: Make sure your SMS inbox isn’t full. Delete old messages if necessary. Review blocked messages: Check whether security apps or system settings are filtering or blocking SMS messages. Disable SMS-blocking apps: Temporarily turn off any SMS-blocking or filtering apps on your device. Check carrier status: Visit your mobile carrier’s official website or app to confirm whether the message was successfully delivered.

Phishing SMS (impersonating official notifications), learn more here How do I stay safe from phishing SMS using the name OKX? Vishing (voice phishing / phone scams), learn more here How do I protect myself from new types of phone scams?

You'll receive an email/SMS confirmation upon changing authenticator app successfully. Note: Follow here if you aren't receiving the SMS code and here to reset Two-factor authentication (2FA)Web Go to the Profile icon and select Security. Find Security on the Profile page Find Authenticator app and select Change. Find Authenticator app in the Authentication methods section Select Continue and follow the on-screen instructions.

remember my login password Open your OKX app and select Menu Open Menu page Select Profile and settings, find Security, and select Login password under the Authentication methods section Fill in the information below and confirm: Current login password New login password 8-32 characters long 1 lowercase character 1 uppercase character 1 number 1 symbol Complete the Security authentication (such as Phone / Email authentication / Authenticator app code) that you've set up and select Confirm An email/SMS

If your mobile phone isn't working properly, or you've lost access to it, or you can't get SMS codes, try the following:My SMS codes aren’t working on OKX Refer to I haven't received the verification code.I want to change my phone number You can switch to a new phone number in your OKX account. To do this, follow the guide below: How do I change my phone number? If you've mobile verification enabled for logins, you can still log in without it.

Note: select Unable to verify if you can't complete the verification Enter the two-factor authentication (2FA) code to continue You'll receive an email/SMS confirmation upon successfully changing your phone numberI can't log in to my account You can unlink your phone number on the 2-step verification page, or contact customer support to reset your phone number. You can learn more about how it works here.

select Next Enter the amount that you'd like to withdraw and select Preview withdrawal Select Withdraw to request a withdrawal Enter your authentication code or SMS code and select Confirm Note: you're required to verify the ownership of the receiving account when you make a cash withdrawal to a newly added account.How do I verify the ownership of the receiving account for a first-time USD withdrawal?

You'll receive confirmation that you’ve been verified by SMS or email. If you haven’t heard from us after 24 hours, check out Support Center or contact AI chatbot for assistance.

app, select Transfer Opening withdrawal page Select Withdraw from the pop-up menu Select Withdraw Select SEPA as your withdrawal method and Next to enter the amount that you would like to withdraw Select Withdraw after you reconfirm the information on withdrawal preview Enter your authorization code or SMS code and Confirm making cash withdrawal Note: You are required to verify the ownership of the receiving account when you make cash withdrawal for the first time.

You may contact our customer service for assistance if any difficulties are encountered.Getting Started Open your OKX app and select Menu Select Menu at the top left corner Go to Account settings and select Security Find Account management at the Security page, select Freeze account Select Reason to freeze account Read what'll happen after freezing your account What'll happen after you freeze your account Tick the relevant terms if you confirmed freezing it and select Freeze account Get SMS/email

If your account stays inactive for the period you've chosen, we'll first try to contact you by email and SMS. If we don’t hear back or see any login activity within your selected response timeframe, we’ll begin contacting your nominated emergency contact by email and SMS. Follow-up messages will be sent every 10 days until we receive a response or your account is reactivated.Why did I receive an inactivity reminder?

Frequent attempts may block code delivery.We recommend waiting 30 minutes to 1 hour before trying again.Unable to receive SMS verification codes Try the following: Check whether your phone can receive SMS normally Check if any apps are blocking messages If the page shows “SMS failed to send,” try again after 2 hours Update the app to the latest version and try again Note: if you use OKX Wallet, back up your private key and seed phrase before updating or uninstalling the app.Unable to receive email

Phishing attacks occur when an attacker pretends to be a trusted source, often using fake URLs, emails, or SMS messages to get you to share sensitive info. They aim to cause panic, using urgent messages like "suspected money laundering" or "account restriction." Example: Note: these are real SMS messages our users receive. Phishing attempts may also arrive via email or from other sources.

If your OKX account is logged in on an infected device, or if you access your email, SMS, or Google Authenticator from it, the Trojan can capture your login credentials and verification codes. This includes the codes required to authorise actions such as withdrawals or security setting changes. With this information, the hacker can perform unauthorized activities on your behalf.