Bitcoin Bomb Ransom Fizzled Out: No Payments Made By Deadline

There will be winners and losers in the race to become the best bitcoin extortionist emailer. The latest bitcoin scam email campaign looks like it will be one of the losers.

New Bitcoin Bomb Ransom Email A Fake

Starting this morning, from U.S. sources, began receiving reports of a fake bomb threat demanding $20k in bitcoin or a “mercenary” would blow up their building. So far no one has paid any of the 15 bitcoin addresses that have been identified. But, it would only take a few people falling for this to make it worthwhile for the scammer.

The email typically states the bomb or explosive device is made of “lead azide”, “Tetryl” or “Hexogen” but also “tronitrotoluene” has been reported.

Notably, the author really wants to be clear that everything is proceeding “according to my guide”. Oh, and BTW, the bomb will go off by the end of the day if you don’t pay.

Continue reading Bitcoin Bomb Ransom Fizzled Out: No Payments Made By Deadline

The Future of Bitcoin KYC

Free Bitcoin KYC
The addition of two Iranian SamSam ransomware bitcoin addresses to the U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) list ushered in a new era in Know Your Customer, Counter Terrorist Financing and Anti-Money Laundering (KYC/CTF/AML) regulation compliance for bitcoin transactions. From now on, no one is allowed to transact with these two bitcoin addresses:


It’s a significant first. For responsible crypto exchanges and bitcoin ATMs operating in this wild west legal environment there are very few FREE KYC/CTF/AML compliance tools available. provides open-source data necessary to adhere to burgeoning global KYC/CTF/AML procedures involving bitcoin transactions.

  • Monitor OFAC List
    Prevent scam addresses from registering at an exchange.
  • Bitcoin Transaction Profiling
    Warn customers before they send bitcoin to an accused scammer.
  • Wallet Risk Assessment
    Mark wallets which have transacted with “scam” wallets to a higher degree of risk.

Continue reading The Future of Bitcoin KYC

Bitcoin Blackmail Letter Scam Raising Prices

Blackmail letter
Not all bitcoin sextortion attempts are occurring over email right now. Reports of a highly customized blackmail letter received in the mail and claiming to have “evidence” of a “secret you are keeping from your wife” and demanding payment in bitcoin in order not to tell, started coming in late 2017 and continue today. Krebs on Security blogged about this scam in January. Back then the amount demanded was around $2,500. In May typical reports had risen to around $8,500. Today the letters are demanding as much as $15,500. Continue reading Bitcoin Blackmail Letter Scam Raising Prices

Sextortion With Password Email Scam Variant Makes 22.67BTC Over First 3 Weeks

Don’t pay it! No matter how convincing inclusion of that old password you used to use makes it seem, they don’t have video of you doing that. Don’t be embarrassed, if you considered paying the ransom email you’re not alone. So far 101 victims have sent 22.67 BTC to 37 of the 176 bitcoin addresses so far reported to be related to the new sextortion with/password scam email variation that first appeared July 10. Reports of previous versions of the same sextortion tactic without the password portion have been reaching us since October 2017. Inclusion of a password is unique over the last three weeks. Continue reading Sextortion With Password Email Scam Variant Makes 22.67BTC Over First 3 Weeks

I Know Your Password #Bitcoin Extortion Email Variant

A new twist on an old trick emerged this week. The porn ransom email claiming to have incriminating video of the recipient which will be released to contacts if not paid in bitcoin, has now included an old compromised password of the recipients in an attempt to add credibility to the scam. Gotta appreciate that dark web creativity. Where did they get all those passwords? The first report of this new variant was received July 10. Since then dozens more reports have come in relating to just over 2 dozen bitcoin addresses as of Friday. This address has been reported 9 times and also has the most total received at 2.83 BTC:


Continue reading I Know Your Password #Bitcoin Extortion Email Variant

Bitcoin Porn Blackmail Scam Moved to Poloniex Wallet

When reports of this email scam first started appearing last September the perpetrators were discovered to be using a Matbea wallet. That appears to have changed. On May 30 every output transaction from hundreds of reported blackmail scam addresses went to a Poloniex wallet address.

These bitcoin addresses were reported as scams related to the porn blackmail email:


Each of them shows an output to 1E2J2DAFGToqmTxK5H8fG6V3Tp3xqSiAm4 on May 30, 2018.

A quick investigation shows 1E2J2DAFGToqmTxK5H8fG6V3Tp3xqSiAm4 is among the Poloniex wallet cluster.

[tweetshare tweet=”A Poloniex wallet address is being used to run the widespread porn blackmail scam”]

Continue reading Bitcoin Porn Blackmail Scam Moved to Poloniex Wallet

The First #Bitcoin Transaction; Was it for two @dominos or @PapaJohns #pizza?

Are these the real bitcoin pizzas?
There is strong evidence to support either thesis. Bitcoin Pizza Day is May 22. No better time to review the evidence. Whose pizza is worth $98 million today?

[tweetshare tweet=”Whose pizza is worth $98 million today? @dominos or @PapaJohns #bitcoinpizzaday”]

Eight years ago “Jercos” sold “Laszlo” 2 pizzas for 10,000 BTC. It was the first transaction in bitcoin history for an economic good or service. At the time 1 BTC was $USD00.08.

[tweetshare tweet=”Eight years ago Jercos sold Laszlo 2 pizzas for 10,000 BTC #bitcoinpizzaday”]
Continue reading The First #Bitcoin Transaction; Was it for two @dominos or @PapaJohns #pizza?

44 BTC Made By Canada Revenue Agency Tax Collection Scam

300 Canadians conned out of 44 BTC in tax debt collection scam.

BitcoinWhosWho received multiple independent reports of scammers posing as Canada Revenue Agency “CRA” agents demanding payment of taxes in bitcoin. Tax payment deadline was yesterday in Canada.

The most active CRA scam bitcoin address was by far
1GVD8Y9473Lxm2ngdKW5P5M1uazDtGMRFo with 259 total payments worth CAD$284,550.

[tweetshare tweet=”The most successful CRA scam bitcoin address totaled 259 payments worth 24.64 BTC.”]

Based on all reported bitcoin addresses, in total, the CRA scammers conned at least 295 victims out of 44.47594323 BTC or CAD$513,550.

[tweetshare tweet=”The CRA scam made 44 BTC”]

Selected Victim Accounts Continue reading 44 BTC Made By Canada Revenue Agency Tax Collection Scam

Where To Report Bitcoin Scams

Taint scam bitcoins here

What can I do if I’ve been scammed out of bitcoins? Bitcoin transactions may be irreversible but there are steps you can take to ensure that someday it may be possible to recover your funds.

Taint the Receiving Address

How do I taint a scam bitcoin address? Is it possible to taint a bitcoin address? Yes! By reporting a scammers receiving bitcoin address(es) to you taint them and all future downstream transaction addresses. Forever. This allows anyone, including law enforcement, to monitor the addresses, and associated wallets, and take action when they are sent to crypto exchanges, Bitcoin ATMs and other known exit points.

[tweetshare tweet=”Have you ever wondered how to taint a scam bitcoin address?”]

Your report to Bitcoin Whos Who can also help screen and potentially freeze future fraudulent transactions.

Only offers blockchain community members a free API and searchable database of reported scam and bitcoin address website appearances, but there are other fraud report venues out there: Continue reading Where To Report Bitcoin Scams