The Serious Fraud Office (SFO) is urging people to remain vigilant against scams after reports people have been getting cold calls from fraudsters posing as staff.
The SFO warned against calls that used pre-recorded messages and overseas-based phone numbers.
Another warning sign was if callers gave instructions to contact an office outside of the country, requested to see your computer screen or have remote control of your computer and if calls were about stolen or hacked phones.
The SFO said its staff did not do any of these things when calling people.