#9 – Is Bitcoin Dead? The Small, Cold Truth.


Bitcoin. Crypto currencies. You probably know computers are involved with this stuff, and computers use electricity. Did you know that the computing power needed to process a Bitcoin transaction may get so large that the electricity cost could outpace any revenue? Actually, that has already happened in some parts of the world where electricity is … Continue reading #9 – Is Bitcoin Dead? The Small, Cold Truth.

What to do NOW to Avoid Massive Ransomware Attack


The biggest, most invasive, ransomware outbreak in history is underway.  It’s called WannaCry, and it has infected computers in at least 74 countries, primarily in Russia.  The Securelist cyber security website reported that there have been more than 45,000 attacks worldwide, but added, “It’s important to note that our visibility may be limited and incomplete and the … Continue reading What to do NOW to Avoid Massive Ransomware Attack

Security Flaw Found in Visa (But Not MasterCard)


A security vulnerability has been found in Visa Cards which does not exist in MasterCard. Basically, it involves the number of times you can try to process a transaction with an incorrect expiration date (or CVV).  Visa allows multiple attempts to process a transaction, and Mastercard allows only 10 attempts before the transaction is blocked … Continue reading Security Flaw Found in Visa (But Not MasterCard)