In a discussion with Cisco Systems information security expert Alexei Lukatsky, it is highlighted that asking users to enter a one-time password on sites outside Telegram creates a high risk of account theft. The concern centers on how a simple OTP step can become a gateway for unauthorized access if the user is redirected to a questionable site. The danger is not limited to any single service; it spans across many platforms that rely on OTP verification as a security layer, including popular messaging and banking services.
Lukatsky points out that the most common trick involves luring the user to a third‑party page where they are prompted to enter the one-time code sent by Telegram. Once the code is entered, scammers gain control of the account and can change the password to lock the rightful owner out. With access secured by the attacker, they can exploit the user’s resources, demand a ransom for restoration, or use the account for further scams. This pattern mirrors established fraud schemes seen in online banking and other sensitive services, where a stolen OTP becomes the key to unauthorized transactions or data access.
To protect personal data and accounts, Lukatsky advises never sharing one-time codes or entering them on dubious websites. Any request to use a one-time code for actions that do not originate from the Telegram app should serve as a warning signal. The user should pause, verify the legitimacy of the request, and consider reporting the incident to official channels. A key rule is that the code in hand belongs to the app that generated it and should not be used on unrelated sites or services. This approach significantly reduces the chance of falling for a scam and helps maintain control over one’s digital identity.
Earlier reporting discussed the rise of sites attempting to steal Telegram user credentials in Russia, underscoring the urgent need for heightened awareness and stronger verification practices. Security researchers emphasize consistent habits such as enabling app‑specific authentication, using hardware security keys where possible, and monitoring account activity for unusual login attempts. By staying alert to unexpected prompts for codes and by validating the source of every authentication request, users can significantly cut the risk of account takeovers and the downstream consequences those takeovers can unleash. [CITATION: Cisco security expert insights]