Michael Horowitz

Michael Horowitz wrote his first computer program in 1973 and has been a computer nerd ever since. He spent 20 years working in an IBM mainframe environment as both an application developer and a DB2 DBA. He then spent a few years working in the Research and Development group of a large Wall Street firm. He has also done technical writing and teaching. He is an independent consultant who has long been focused on Defensive Computing. His personal site is michaelhorowitz.com. This is a weblog of Michael Horowitz. The opinions expressed here are those of Michael Horowitz and may not represent those of Computerworld.

Verifying and testing that Firefox is restricted to TLS 1.2

Restricting Firefox to TLS version 1.2 makes browsing safer

Whats behind the curtain of HTTPS is TLS. There are three versions of the TLS protocol and there is no reason to still support the oldest two versions. A simple tweak of Firefox can insure it only uses the most secure version, TLS...

A Chromebook can increase the protection of air-gapped computers

A Chromebook can increase the protection of air-gapped computers

Thanks to WikiLeaks, we now know air gapping is insufficient. But all is not lost, a Chromebook can pump up the protection of air-gapped computers.

Are Android bug fixes worth $510 when buying a phone?

Are Android bug fixes worth $510 when buying a phone?

There is, financially, a high price to be paid, by anyone who wants Android bug fixes. What is someone who doesn't need high end hardware to do?

Flash Player updated just 3 days after an update

Flash Player updated just 3 days after an update

Traveling a well-worn route, there is yet another update to Adobe's Flash Player. No critical security flaws.

The Windows Malicious Software Removal Tool has been updated for WannaCry

Ten days after defending Windows XP against WannaCry, Microsoft adds detection and removal of WannaCry/WannaCrypt to the Windows Malicious Software Removal Tool (MSRT).

Windows Defender does not defend Windows 7 against WannaCry

A number of articles about Wannacry/WannaCrypt point out that Microsoft updated Windows Defender to detect it. But, that's not the whole story for Windows 7 users.

The Windows firewall is the overlooked defense against WannaCry and Adylkuzz

The Windows firewall is the overlooked defense against WannaCry and Adylkuzz

For defending a Windows PC from LAN side attacks, the built-in firewall gets no respect. It can block TCP port 445 and prevent infection by both the WannaCry ransomware and the Adylkuzz cryptocurrency miner. An XP machine with all...

Patching Windows XP against WannaCry ransomware

Patching Windows XP against WannaCry ransomware

Microsoft issued a bug fix yesterday for Windows XP to patch the SMB flaw used by the current WannaCry ransomware. This is a walk-through of installing the patch

Third party antivirus programs interfere with Windows Defender critical patch

Third party antivirus programs interfere with Windows Defender critical patch

To install the latest Windows Defender update, I had to fight it out with Avast antivirus. It took a few rounds, but in the end, I won.

7 mistakes Google made updating my Google Wifi router

7 mistakes Google made updating my Google Wifi router

Google Wifi mesh routers may be great on speed and range, but the automated software update process leaves something to be desired.

Asus router warnings on privacy and security

Before buying an Asus router, it would be wise to read Daniel Aleksandersen's review of the stock Asus firmware, especially the privacy issues regarding the included Trend Micro software.

Load More