Stacey McDonald has received cold calls from "Windows maintenance" or "maintenance services" offering to help fix her computer.
She suspected her number was obtained through the phone book.
Previously, she would receive calls once a month but the scammers had "really upped the ante" and for the past 10 days calls were consistently coming through every morning and evening.
"It's getting to the point where the phone rings and we think 'Should I answer it or should I not'."
The last call was from a woman she had difficulty understanding, and who became aggressive when she refused to comply with the demands.
Mrs McDonald said it was obvious the calls were coming from overseas as there was a delay and her main concern was the "nuisance" it was causing her and her young family.
Many of her family and friends had also been targeted, although she was unaware if they had been hit with the same intensity.
Netsafe cybersafety and security consultant Chris Hails said the prevalent scam had been in existence for the past two years and often came in "waves".
"They will hit Australia for a few weeks and then, when people became aware of it in the media, they change countries."
He said if people replied to the calls by saying they were aware of the scam, they were often put on a "blacklist" and would receive more calls.
His advice was either to hang up or ask for contact details and contact Netsafe or the phone provider, who could then try and source the New Zealand number callers were using to "dial in on", since the callers were based overseas.
"It's not foolproof but it might help slow them down," he said, and consequently the scammers would have to source "another series of numbers".
He suspected some of the scammers, probably from countries with poorer economies, thought they were doing a legitimate job when installing and demanding payment for software that users could obtain elsewhere free.
On Wednesday, the Otago Daily Times reported the scam had robbed an elderly Central Otago woman of $283.
Callers were also reacting to local media.
In 2010, the Otago Daily Times reported a case where the same type of scammers were using a burglary at a Dunedin school as a new angle.
It was claimed a virus had been introduced after the burglary and was affecting individual computers and potentially others if it were not removed.
Queenstown residents have also been targeted by different cyber scams.
A Queenstown business recently received an inquiry for a substantial tourism experience by a Canadian tourist, who then posted a pre-payment cheque for $A84,000 with a note asking some of the money be transferred to his travel agent.
The business contacted the police, who advised she speak to Netsafe, and it was confirmed to be a scam.
This week, the Government, in conjunction with Netsafe, launched the inaugural Cyber Security Awareness Week, which aimed to raise the profile of cyber crime and provide options for those affected.
Anyone targeted by cyber scams could report them to Netsafe, Consumer Affairs, their phone provider, the police, or file it on www.theorb.org.nz, which was an online register with the ability to notify the appropriate organisations.
