Waiting for my snopes listing as super hacker UL’s begin to circulate.
I think you need to take this seriously. If the client is foolish enough to be led this far it’s possible they will do something else foolish. You are not going to get his trust back based on what you have written. You, really, really need to disconnect yourself from this stupidity ASAP.
I think you need to put together a short registered letter (copied as an email) pointing out
1: How long you have been in business and the large number of systems you are responsible for
2: He is being scammed by scareware artists intent of siphoning cash off him and has swallowed their BS hook, line and sinker
3: Your professional relationship with your clients is paramount to you and based on the utterly nonsensical charges he’s apparently bought into there’s no way to maintain a reasonable professional relationship going forward.
4: It’s in the best interests of both parties to sever the client relationship at this time. Advise him there is still system monitoring software on this system the scam artists did not remove, and that you can remove it or he can have it removed by someone else if he chooses.
5: If he is intent of pursuing legal action advise him to have a real PC security professional (not an internet site) review the correspondence between you before moving forward as it will save him a lot of grief and wasted money.
Thanks and bye.
God knows what the courts would do with this.
I took it seriously until the last phone call, between him waffling over what do do and me pointing out the utter stupidity of it all <politely> They honestly thought I have a way to get into a computer that is shut off (spare me the wake on lan arguments, its not applicable here).
A court is going to want copies of the hard drive before having this “security specialist” mucking around, any meaningful chain of evidence has been destroyed long ago for criminal purposes. all he would have left is civil, which would last about as long as a trial for witchcraft considering where the accusations come from.
Unless a judge is as gullible as your client. 
Why wait? Just hack into Snopes and write it yourself.
I don’t know, it sounds like drachillix may be putting the screws to this guy, and trying to rouse an internet army here to back him up. I’d be cauti-#(@(#*(##(^ATD NO CARRIER
Ah, yes, in the past humans consulted the people that claimed to have control over the unknown, now they call tech support. *
IT with social studies background here. 
About 10 years back, I was admin help to someone who owned a bunch of pizza franchises. For those who don’t know, the stores are mostly run by young people who have proved that they are manager material by showing up on time, learn their job and work for at least 9 months.
Nice, motivated young people for the most part.
Part of my job was to remotely log into the offsite comps and go through the payroll data to fill out unemployement claims. I did this in the mornings, before the stores opened so the manager could have his comp.
One day, I was filling out the paperwork and suddenly the connection broke. Cue me sighing because that meant the comp had lost power and I’d have to wait until someone came to work to have them turn it back on and then the manager would need it and I’d have to wait until the next morning. OK, filed the paperwork back in my to do folder, and suddenly got a frantic call from the manager.
SOMEONE HAD BEEN STEALING FINANCIAL DATA!!!
WE ARE BEING HACKED!!!
WHAT SHOULD I DO!!!
After I calmed him down, I learned that not only had he shut the comp down, he unplugged it and then unplugged every other plug he could.
So, I was the big meany hacker who cost a $2000 service call from corporate.
Don’t force me to remind you again.
Ha! This happens all the time to me here in Ireland……Microsoft or Windows is calling some of my customers here in Ireland. …… I know Microsoft has nothing else to do, but call people about a Spyware or a Virus on a private home PC /Laptop.
… and after paying them €80-€100 via credit card the PC is working worse than it ever did before the “official” Microsoft technician worked on it – it is MY fault for selling them a dodgy PC or doing a dodgy repair job on it…… and they want me to fix it up for FREE for them afterwards.
Even, if they never been to my shop before, they say: why pay me? - Since they already paid Microsoft/Windows for the fix – I should do it for free for them.
When I tell them, that the once they already paid are scammers and they got ripped-off, they sometimes don’t believe me and give me a sceptical eye roll :smack: – I just tell them then to call the Garda (Irish police) about it, if they don’t believe me, but if they want it fixed by me they have to pay or if they argue after the fact, I won’t release their PC/Laptop until payment has been made.
Ah, old people. My boss’ secretary just called me over to ask why XP Defender is asking for her credit card number. The only reason she hadn’t already entered it is because she thought our employer would pay for it.
Spyware/Malware/Bullyware… the choice of it
As long as people are so stupid as to pay for the crap, someone will make it and scam the idiots.
XP Defender must be safe, it has the word XP in it.
Unfortunately, a movie like Skyfall (why it is getting positive reviews is baffling to me) encourages the belief that “hackers” can do literally anything. I’m sure there are people who honestly think if their e-mail gets “hacked”, their vacuum cleaners and carpet sweepers will transform into robotic killing machines.
They are already at my house.
The dog and I agree on that.
Your Rumba is carefully collecting your hair and fingernail trimmings so that corporate witches can cast spells on you to make you buy their products.
Must…buy Rumba…Must buy Rumba!..Must buy Rumba!
Roomba. Though I guess it’s theoretically possible that you could collect hair and nail clippings doing this.
I don’t think the scammer intended for the customer to contact you and accuse you of being a hacker - I think he probably intended the customer to cut off contact with you - because you’re the normal support channel - you’re the person who would be most likely to undo his (the scammer’s) hijacking of the customer’s computer.