computer security Archives

This “Computer Maintenance Department” sure doesn’t know much about computer maintenance

Dave Farquhar scams, security May 22, 2013June 7, 20141990s, AMMYY, antivirus, avast, business relationship, caller id, cissp, Computer Maintenance Department, computer security, FBI, Microsoft Security Essentials, Missouri, power button, troubleshooting

“Peggy” from “Computer Maintenance Department” (1-645-781-2458 on my caller ID) called again. Lots of people are aware of these phone calls. They call, make vague claims about receiving a report that your computer is running slow and giving you errors, and are very careful not to say who they are or who they work for. Usually I just do whatever I can to get them off the phone.

But after having lunch with some other computer security professionals last week, a couple of them talked me into finding out how these guys operate. So I fired up a PC that turned out to have a real, legitimate issue. After resolving that issue myself, I turned the caller loose on my semi-functional PC so I could see what these scammers actually do. He had me connect to Teamviewer.com and run their remote access software. I followed his instructions, watched him connect, then slyly unplugged my network cable.

When my network connection dropped, “Peggy” quickly transferred me to a “senior technician” who used the name “Roy.” Read more

Dave Farquhar

David Farquhar is a computer security professional, entrepreneur, and author. He has written professionally about computers since 1991, so he was writing about retro computers when they were still new. He has been working in IT professionally since 1994 and has specialized in vulnerability management since 2013. He holds Security+ and CISSP certifications. Today he blogs five times a week, mostly about retro computers and retro gaming covering the time period from 1975 to 2000.

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An upgrade. And an upsell.

Dave Farquhar Uncategorized May 20, 2013September 24, 20241990s, Australia, computer security, podcast, radio shack, resistors, sony, thumb drive, usb port

I bought a new radio for my venerable 2002 Honda Civic this weekend. I want to be able to listen to security podcasts on my commute, which wasn’t practical with my factory radio. So, off to the nearest car audio shop (Custom Sounds) I went, skipping both Best Buy and Audio Express. I looked at a couple of $119 decks, then the salesman mentioned an Alpine HD radio deck for $129, and a Sony deck with Bluetooth for $149. Bluetooth didn’t really interest me much, but HD radio seemed worth the extra $10. To me, the secondary HD stations seem more interesting than the primary ones. Then again, I’m the guy who skips right past the hits on U2’s The Joshua Tree and cues up “Red Hill Mining Town.” The stuff I really like generally doesn’t do all that well on mainstream radio.

But my main motivation was to get a radio with a USB port, so I can snarf down a few hours’ worth of podcasts every week to a USB thumb drive, plug it in, and stay in touch with the security world. Total overkill for an Alpine, but like the salesman said, Alpines aren’t crazy expensive anymore like I remember them being in the early 1990s. Read more

Dave Farquhar

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I do not agree with my church president’s forced apology over Newtown, Conn.

Dave Farquhar Christianity February 10, 2013July 23, 2017computer security, Jerry Kieschnick, Jesus Christ, journalism, lcms, Missouri, Post Dispatch

This morning, I read something in the St. Louis-Post Dispatch that disturbed me greatly. I didn’t say anything about it until I had a chance to confirm with my pastor that it is true.

In the aftermath of the shooting in Newtown, Conn., Rev. Rob Morris, pastor of Christ the King Lutheran Church, spoke at an interfaith service designed to give comfort to the community. the Rev. Dr. Matthew Harrison, the president of the Lutheran Church-Missouri Synod, of which I am a member and a former employee, forced Rev. Morris to apologize. (I will refer to him as Dr. Harrison throughout because he has earned that degree, not because I agree with what he says. It is possible to acknowledge rank while expressing disagreement.)

Dave Farquhar

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How to get your first job in IT

Dave Farquhar Careers January 17, 2013August 20, 20186502, antivirus, certifications, computer security, journalism, troubleshooting, unix

I helped a friend of a former coworker with his resume this week. He’s looking to get their first jobs in IT, and found it difficult, even though he was applying for an entry-level helpdesk position.

His resume certainly indicated he was educated and able to hold down a job, but that wasn’t quite enough. Here’s what I had him do to beef up that resume to get past those initial rounds of screening and get interviewed.

Dave Farquhar

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Thanks for the misinformation, Disney

Dave Farquhar security August 21, 2012android, antivirus, apache, BSD, computer security, iphone, mac os x, os x, sony, spyware

In one of its throwaway kid’s sitcoms, Disney insinuates that open source software contains spyware and using it is a ‘rookie mistake’.

Open source software rarely contains viruses or spyware. Since it’s open for examination, changes to the code that have any funny business in them tend to be rejected. For that matter, code with unintended bad consequences tends to either be rejected, or quickly changed.
Read more

Dave Farquhar

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Things I wish everyone knew about home Mac security

Dave Farquhar Macintosh, security May 18, 2012antivirus, apple, avast, computer security, cybersecurity, firewall, mac os x, Microsoft Office, os x, passwords

On Wednesday evening, I wrote about basic computer security from a Windows-centric perspective. I knew some people who needed help in a hurry, and given there was a 90% or so chance they were running Windows, I took that route.

Some of my buddies who use Macs passed it along. And much of what I said then does apply, but I’d like to clarify a few of those points.
Read more

Dave Farquhar

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Things I wish everyone knew about home computer security

Dave Farquhar security May 16, 2012December 1, 2015antivirus, boxcar, certifications, computer security, firewall, malwarebytes, Microsoft Security Essentials, passwords, spam, spyware, vista, WEP, Windows XP, yahoo

I’m a security professional by trade, with two certifications. I’m not responsible for defending your computer networks, but I want your networks to be secure. There’s a really simple reason for that. If your computer and your network is secure, then it isn’t attacking mine. Or anyone else’s.

Several fellow subscribers to a train-related interest group that I like got hacked recently, and have been sending out spam messages. They’ve received a lot of advice in the hours since. Some of it has been good, and some not as good. So I tried to think of some things that people could do in about 30 minutes to keep the crooks at bay.

Incidentally, the computer crooks won’t be going away. Computer crime happens because the criminals can make more money doing that than doing something legal. The only way to make it stop is to make it too hard, so that getting a real job becomes more profitable. You won’t solve that problem in 30 minutes, but if we all take that single step down that road, we’ll make the world that much safer. So, with that, let’s roll up our sleeves. Read more

Dave Farquhar

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What’s going on with Macintosh security?

Dave Farquhar Macintosh, security, Viruses April 22, 2012antivirus, apple, computer security, mac os x, macintosh, malware, McAfee, Microsoft Security Essentials, os x, symantec

The latest figures I’ve read say there are perhaps a half-million infected Macintoshes still floating around out there, an improvement from the high of 600,000 that I was seeing a few weeks ago, but probably not what Apple had hoped after releasing its most recent fix.

I argued three weeks ago that the end of the innocence was either here or very near. I’ll argue now that it’s gone: There are now 250 known Macintosh OS X viruses in existence. In 2003 there were none. Read more

Dave Farquhar

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Don’t give prospective employers your Facebook password

Dave Farquhar security March 22, 2012computer security, passwords

I’ve read multiple stories this week about potential employers demanding that interviewees hand over their Facebook passwords during the job interview so they can snoop around.

There’s no good reason for this.
Read more

Dave Farquhar

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The old days of viruses

Dave Farquhar security, Viruses March 8, 2012March 26, 2025antivirus, CIO, CISM, cissp, computer security, firewall, intel, John Dominik, journalism, Love Letter, malware, Missouri, public internet, spam, symantec, university of missouri, VBS

Blogging pioneer John Dominik, inspired by my Michelangelo memories, wrote about his memories of viruses later in the decade. So now I’ll take inspiration of him and share my memories of some of those viruses. I searched my archives, and at the time it was going on, I didn’t write a lot. I was tired and angry, as you can tell from the terse posts I did write.

Dave Farquhar

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