20.
(A) deeper
(B) lower
(C) slighter
(D) higherFraudsters are using a new method to trick people into parting with their money. They are21 to be technical support teams of people's ISP (Internet Service Provider). The new22 and can trick even experienced Internet users. The fraudsters are 23the IP (Internet Protocol) of computers – this is a particular computer's online ID number.24 they have the IP, the victim gets a pop-up window with a message that says the ISP has"detected malware" on the computer. The victim is then 25 to call a phone number forhelp. The Internet security company Malwarebytes said: "The scammers are trying to getpeople to call them. People are 26 paying to be scammed."Malwarebytes said most of the scams so far have been detected in the USA and UK, butthey will spread 27 . Jerome Segura, a malware expert at Malwarebytes, told the BBC: "Itcaught me 28 surprise and I almost thought that it was real. It was a page from my ISPtelling me my computer was infected. It was only when I looked in closer detail 29 it wasa scam." The fraudsters are infecting online adverts. Once an infected ad appears on yourscreen, the virus 30 your IP number. You do not even need to click on the ad for the virusto do this. Malwarebytes' advice is to call the tech support number you received when yousigned up for the Internet, and to not trust numbers in pop-up windows.