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Discussions - Public / Re: So you thought two-factor authentication was secure, did you?
« Last post by benali72 on September 19, 2017, 04:23:23 PM »
Thanks for the heads-up, Arnold. Yeah, I thought it was pretty secure... oops!
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Discussions - Public / Re: CCleaner infected with malware
« Last post by pxsant on September 19, 2017, 04:17:53 AM »
CCleaner is actually from a company called Piriform.   They were bought out by Avast somewhere around July.   This happened after the transfer of Piriform assets to Avast.  Makes you wonder about a disgruntled employee as the possible culprit.

I checked all my systems and luckily I do not have CCleaner installed on any of them.
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^ Yeah, I'd say the same exchange numbers started a few months ago and is increasing.  Nomorobo has not been able to pick these off.
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Discussions - Public / Re: CCleaner infected with malware
« Last post by JoFrance on September 18, 2017, 05:15:25 PM »
I've used CCleaner lots of times.  It always did a good job so its really disappointing to hear that it can't be trusted anymore.
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The spammers are now localizing their junk shit. We've been getting a LOT of what appear to be local same area code calls. Often with the same exchange (the three digits before the final four digits.) They appear to be trading on the idea that the call looks like a neighbor's number, or a local business.

It's infuriating. But it's not exactly new. We've been getting these for months, but increasingly now.
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Quite a few robocalls are getting by that have the first 3 digits after the area code that are the same as my phone number.  Anyone else seeing this with Nomorobo?  This is a troublesome new development.

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Discussions - Public / CCleaner infected with malware
« Last post by I D Shukhov on September 18, 2017, 06:27:46 AM »
https://www.theverge.com/2017/9/18/16325202/ccleaner-hack-malware-security

Thankfully I don't use CCleaner but was aware of it and may have used it in the distant past.

Quote
“For a period of time, the legitimate signed version of CCleaner 5.33 being distributed by Avast also contained a multi-stage malware payload that rode on top of the installation of CCleaner,” says the Talos team.

This has always been my fear:  an insider inserts malware into a legitimate product.  No checksum or signing would detect it.

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Discussions - Public / Re: How do you stop spam phonecalls?
« Last post by I D Shukhov on September 17, 2017, 05:00:51 PM »
^ That's perceptive.

I'd say Nomorobo is about  85% effective in blocking calls.  It's better than 1 in 5 but worse than 1 in 10 (calls that get through).  The ones that do get through often have a local area code.  I don't know if that's because of spoofing where the goal is to get me to let my guard down because it's not out of state, or if hapless work-from-home people are given a list of people to call locally.

Maybe in some cases I'm among those first people called before the number gets added to their database.

As soon as I get a call that's not blocked I see it as my civic duty to immediately report it and I suspect that other Nomorobo users do the same as a way of saying thanks for the free service.



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Discussions - Public / Re: How do you stop spam phonecalls?
« Last post by The Gorn on September 17, 2017, 09:16:51 AM »
In fact -

Nomorobo has a big incentive to let VOIP customers on their service for free: DATA COLLECTION. They can SEE spam call floods in real time. The more free members, the more data and the more accuracy.

Brilliant.
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Discussions - Public / Re: How do you stop spam phonecalls?
« Last post by The Gorn on September 17, 2017, 08:43:19 AM »
I'd try Nomorobo:  https://www.nomorobo.com/.  The pricing is at the bottom:  $1.99/mo.  VoIP landlines are free and the blocking is very good.  Not 100%, but I'm very happy.  (But maybe that's because the price is right  :-X)

I'm not sure how Nomorobo builds its database.   I think they may do it partially based on the wisdom of crowds because when I report a robocall they missed they ask when I received the call and "just now" is an option.  So if 1,000s of reports come in for any number -- spoofed or not -- "just now" they know it's a fake number.

What a great recommendations! Thanks.

Yes, your hypothesis is correct. There's NO way to predict spam calls in advance. From the short video I watched on their site it seems to be a very real time thing - nomorobo will see an avalanche of calls from the same number and can preemptively decide that it's a number to block really quickly.

Exactly how Gmail and spam blocking sites handle email spam.

Also, maybe VoIP has a protocol where parts of it can't be spoofed and can be used to identify the source.

Not at all. My understanding is that VOIP is a translation of POTS (plain old telephone service) voice calls into a purely digital, TCP networked environment. VOIP is more like an interface layer between old phone system and digital networked voice. The POTS system of direct dial and DID numbers and PBX systems doesn't contain any such "real source of call" info and is basically wide open. The caller over POTS can be programmed to appear to be anyone. VOIP doesn't receive any better data than what a POTS phone would receive.

You can't extract data from a legacy source that isn't there and isn't part of the protocol.

So there's no inherent way to defend against the calls except with flood detection.
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