In a commentary to the Prime agency, he noted that the main signal is the hidden number of the caller or consisting of three or four digits.
In addition, according to Timofeev, attackers often use foreign numbers and quickly drop the call.
"Dropping" a call is almost always a scammer," he added.
The expert recommended using special applications to check and identify incoming calls.
Earlier, lawyer Ivan Solovyov warned against calls from scammers from the code 977 to transfer funds to the account.
Honored Lawyer of Russia Ivan Solovyov said in an interview with RT that telephone scammers continue to improve methods of deception. According to him, the new scheme applies to residents of the Far East, Siberia, the Urals, the Volga region and remote regions of the north-west of the country.