Here is a phishing email I received today. These almost always land in my junk mail (hooray!).
This particular one encourages me to click on a Microsoft Word file claiming to contain an invoice I should pay. I also received a couple with “.xps” attachments. These apparently make use of printer paper specification files in MS Windows.
According to an article in Threatpost, these may be part of a phishing campaign that uses an unpatched flaw in MS Windows.
Continue reading Invoice Phishing Campaign
While researching my next edition of Elementary Information Security I came a this posting from last January. It comes from the “netmux” web site and describes a $5,000 design for a password hash cracker. It also links to other state of the art cracking gear.
In June, 1999, Senator John McCain had started his presidential bid and was visiting companies in Silicon Valley, including Secure Computing Corporation, where I worked. He was there to discuss government policies on several tech topics, including the export of cryptographic technologies and products. I had been writing policy statements about crypto exports as part of my job. I’d also published my first book, Internet Cryptography, so they flew me out from Minnesota to meet the Senator.
Continue reading Sen. John McCain, 1936-2018
I received an impressive email scam recently. My response was to forward it to the email provider’s abuse contact (firstname.lastname@example.org) and file a complaint with the Internet Crime Complaint Center (ic3.gov). I’ll include the whole email later. The bottom line: Scammer has my password and will humiliate me if I don’t pay $1900 in bitcoin.
The scammer’s email landed in my spam folder. I was given a deadline of July 11. I didn’t clean out my spam folder till today (July 15).
In fact, the scammer does have one of my passwords: a throwaway password I use with throwaway accounts. When a web site makes me “register for an account” to retrieve information I want, this is the type of password I used to use. Now that I use password manager software (Lastpass specifically) I choose passwords more randomly and let the manager remember them.
Continue reading Interesting Email Scam I Received
I’ve signed on to do a Coursera online course on cloud security. I’ll share more details as production progresses. This post contains a few notes on organizing video clips for a large project.
The video almost always consists of two synchronized streams: one of my bearded face narrating the video and the other of animated images, text, and diagrams. This is more complicated than my older video efforts, which consisted of animated presentations with voiceover.
I’ve now learned the value of the famous movie-studio clapperboard slate. I’ve also learned that your file naming process has to blend well with your editing style.
Continue reading Organizing Video Clips for an Online Course
There is no way to verify an email’s contents except through cryptography. Until every email client includes encryption and reliable authentication, we should always doubt an email’s source.
We can increase our confidence in an email a little, though, by tracing its path through the mail system. I use this technique more-or-less daily to look at potential phishing emails. If the final Received header didn’t come from my bank, then I know it’s fake.
Continue reading How to Trace an Email Message
I receive thousands of emails every month. I do a lot of (for me) critical activities online. I never receive legitimate emails demanding a suspicious online action any more.
Except from HR departments.
IT security people know this is a problem. The upper left image comes from the University of Minnesota’s phishing awareness blog. HR people as individuals also seem to know that phishing is a problem. But they still insist on sending suspicious-looking emails that demand personal information. No doubt it saves their department a few dollars.
Full disclosure: as noted at the end of this posting, Minnesota’s HR department has taken several steps to reduce these risks.
Continue reading HR and Phishing
My textbook lists categories of cyber-attacks that focus on an attack’s lasting impact: how does it affect the target’s assets and resources? Since the categories really reflect the attack’s impact on the target, they really represent risks. Here are the categories I use right now:
Denial of service – Pillage – Subversion
Masquerade – Forgery – Disclosure
This is a work in progress as I figure out some conceptual ideas.
Continue reading The Six Types of Cyber-Risks
Quantum computing gives us a way in theory to quickly crack certain types of cryptography. Well-funded startups are working on prototype quantum circuits, as are big guns like Intel, Microsoft, and IBM. Success could render a lot of today’s encryption obsolete. In theory.
Academic and industrial research labs have built basic quantum circuits. If Moore’s Law applies to quantum circuits, they will be the next big thing.
I remain skeptical. Quantum computing seems like perpetual motion machines to me, though I’ve never researched reasons to support my intuition. Researcher Gil Kalai presents an argument based on computational theory and models of noise. He argues that practical computations will lose out to noise effects. I’ll be interested to see more about this.
By Dick Pence
This story appeared in The Washington Post in 1991, shortly after a computer glitch caused a “long-distance blackout” on the East Coast.
Those big phone outages of the past couple of weeks have had me feeling a bit guilty over what’s been happening. You see, I remember exactly how all this started.
Back in 1950 I was a novice seahand aboard a cruiser based in Philadelphia, barely six months out of high school and fresh from the plains of South Dakota. One Friday night in November, we were granted shore leave at the end of a two-week training cruise. Homesick and seasick, I headed immediately for the row of pay phones that lined the dock.
Depositing a carefully preserved nickel (remember?), I dialed “O.” The following is a roughly verbatim account of what transpired after the Philadelphia operator answered.
Continue reading Two Longs and a Short