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Terry Zink's Cyber Security Blog
Discussing Internet security in (mostly) plain English
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February, 2008
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Terry Zink's Cyber Security Blog
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February, 2008
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Terry Zink's Cyber Security Blog
More on CAPTCHA's (Google's in particular)
Posted
over 5 years ago
by
tzink
5
Comments
Websense is reporting in a blog article that Google's CAPTCHA has been broken with a one in five success rate. More interestingly, they have a lot of technical details about how the botnet members coordinate with two different computers during the...
Terry Zink's Cyber Security Blog
CAPTCHA's are broken - so now what?
Posted
over 5 years ago
by
tzink
3
Comments
A few weeks ago I blogged that it sure looked like spammers had broken the CAPTCHA for Windows Live (Hotmail), Yahoo and Gmail. The evidence was circumstantial in that I was seeing a lot more spam from these services. Over the past couple of weeks...
Terry Zink's Cyber Security Blog
More on PII and IP addresses
Posted
over 5 years ago
by
tzink
1
Comments
In a follow up to the blog post from Google arguing against IP addresses being Personally Identifiable Information, I have a couple of more comments. A couple of months ago we ran into the exact same issue. While Whitten does make valid points that...
Terry Zink's Cyber Security Blog
IP addresses and PII
Posted
over 5 years ago
by
tzink
3
Comments
I don't normally cheer for Google when I don't have shares in the company, but this time I will make an exception. Alma Whitten, Software Engineer at Google, today posted to their Public Policy Blog that IP addresses shouldn't be considered Personally...
Terry Zink's Cyber Security Blog
How to use the Relative Performance Index
Posted
over 5 years ago
by
tzink
2
Comments
In my previous post , I described an indicator I just invented called the Relative Performance Index. In this post, I'd like to describe how to interpret it. The RPI makes it possible to do an apples-to-apples comparison. Our spam filter...
Terry Zink's Cyber Security Blog
The Relative Performance Index
Posted
over 5 years ago
by
tzink
5
Comments
I’m so good sometimes I amaze even myself. I like to play around with metrics and measurements. For the longest time, this was difficult to do because I was unsure of how to determine our non-spam. Well, a couple of months ago I devised a system...
Terry Zink's Cyber Security Blog
Facebook: I need to be more careful
Posted
over 5 years ago
by
tzink
1
Comments
The other day on Facebook, I kind of accidentally spammed my friends. Here's what I mean: I got one of those Quiz invitations from one of my friends asking me to answer one of their questions, how well do I know them? It may have been "What...
Terry Zink's Cyber Security Blog
Was a CAPTCHA broken?
Posted
over 5 years ago
by
tzink
7
Comments
A couple of weeks ago, I blogged that some outfit in Russia claimed to have broken Yahoo's CAPTCHA for creation of new email accounts. Someone posted a reply in the comments with a link to an article that this was unlikely. Yet, in the past...
Terry Zink's Cyber Security Blog
The advantages of being part of a large anti-spam company
Posted
over 5 years ago
by
tzink
2
Comments
Sometimes I moan about the difficulties of being part of large company in the time it takes to get things done, but it has its advantages. As part of a small company, stuff is often done ad hoc. People write spam rules, write little scripts to do...
Terry Zink's Cyber Security Blog
Stock spam and bear markets
Posted
over 5 years ago
by
tzink
2
Comments
If you're a stock trader at all, it'll come as no surprise to you that over the past three months we've been in a correction. If the definition of a bear market is a drop of 20%, then from peak to trough we have seen a bear market in the Nasdaq...
Terry Zink's Cyber Security Blog
A couple of more thoughts on the David Ritz case
Posted
over 5 years ago
by
tzink
2
Comments
I thought I'd post a couple of more thoughts on the David Ritz case. There are a couple of points in the judgment that are simply bizarre: Ritz has engaged in a variety of activities without authorization on the Internet. Those activities include...
Terry Zink's Cyber Security Blog
Summary of the David Ritz case
Posted
over 5 years ago
by
tzink
4
Comments
As I wrote in an earlier post, a judge in North Dakota recently ruled against David Ritz. Ritz is an anti-spammer who was sued by Sierra Corporate Design, Inc. The full judgment is here , I will attempt to summarize it. The basis of...
Terry Zink's Cyber Security Blog
Piles of stock spam from Gmail last couple of days
Posted
over 5 years ago
by
tzink
2
Comments
In the last few days, I have started receiving piles of stock spam from Gmail touting the ticker symbol RQST.PK. I see these spams in my Gmail account, my Frontbridge account and now my Yahoo account. I still get spam from Hotmail, but it's confined...
Terry Zink's Cyber Security Blog
Maybe the North Dakota judge should watch more South Park...
Posted
over 5 years ago
by
tzink
3
Comments
A couple of weeks ago, a judge in North Dakota ruled against anti-spammer David Ritz for conduct against Sierra, Inc, allegedly an enterprise that spams. In a future post, I'll comment on the case. But for the time being, the key point to...
Terry Zink's Cyber Security Blog
Microsoft offers to buy Yahoo
Posted
over 5 years ago
by
tzink
9
Comments
Last Friday, Microsoft made an unsolicited offer to buy Yahoo for $31 per share, representing over a 50% premium from Yahoo's then-share price. Leaving aside the question of whether or not this is a good deal, and what Microsoft's true motivations are...
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