Amir Lev is the CTO and President of Commtouch Software Ltd. (NASDAQ:CTCH), an e-mail and Web defense technology provider. He co-founded the company in 1991 and oversees all R&D and product activities. Before founding Commtouch, Amir managed development efforts for Daisy Systems, a leading developer and manufacturer of computer aided design products. Amir holds a B.A. in Computer Science and Economics from Hebrew University, Jerusalem.

Commtouch provides messaging and Web security technology to approximately 135 security companies and service providers -- including Check Point, F-Secure, Panda Security, Mirapoint, Sendmail, and Tumbleweed -- for integration into their solutions. Commtouch’s patented, cloud-based Recurrent Pattern Detection™ and GlobalView™ technologies automatically analyze billions of Internet transactions in real-time, for hundreds of millions of users in 190 countries. Commtouch is headquartered in Netanya, Israel, and has a subsidiary in Sunnyvale, Calif.

You can also hear from Amir's colleagues over at and @commtouch.

This is a weblog of Amir Lev. The opinions expressed are those of Amir Lev, and may not represent those of Computerworld or Commtouch.

Latest Posts by Amir

If you've been glued to the World Cup, you'll know that there's more to the matches than soccer (football for our international audience). I'm talking about those incessant horns -- the vuvuzelas. They're really catching people's attention, for all the wrong reasons. It got me thinking... In this week's Security Levity, how is a vuvuzela just like spam? Vuvuzelas and spam? Have I gone mad? Never fear, dear reader, let me count the ways...

June 30, 2010 8:07 AM EDT

"You Could Save up to 50% on Your Phone Bill!" screamed an email from Vonage. Naturally, users complained this unsolicited, bulk email was spam. But some spam filters weren't having it -- a surprising number of these messages reached user inboxes. Vonage's marketing agent sent the email from a list of "nonsense" domain names, including the unpronounceable Surely that's illegal? Let's find out, in this week's Security Levity...

June 23, 2010 12:12 PM EDT

In this week's Security Levity, I want to talk about the recent AT&T Apple iPad privacy breach, as discovered by Goatse Security. I also want to talk more generally about how companies often leak their customers' email addresses.

June 16, 2010 8:08 AM EDT

In today's Security Levity, I've got more on the outbound spam problem. Back in April, I argued that it's critical for networks to block outbound spam, to protect your reputation and the deliverability of your email. I also said that outbound spam can be a symptom of far more damaging problems, specifically malware that could damage your business. Today, I want to talk about an independent study that sheds more light -- and hard data -- on these issues...

June 09, 2010 8:08 AM EDT

In this week's Security Levity, I want to address the fears raised about a new phishing trick. Dubbed tabnapping, it was recently dreamed up by Mozilla's Aza Raskin. Commentators around the web are worrying about its potential. But is the sky falling? No! Let's see why...

June 02, 2010 8:08 AM EDT

In this week's Security Levity: a reply to a couple of reader questions about spam filtering techniques. Specifically, the types of techniques that can be used when the sender's reputation is 'gray'.

May 26, 2010 8:08 AM EDT

In this week's Security Levity, the second part of my interview with Abhilash V. Sonwane, vice president of product management at Cyberoam. Abhilash has extensive experience building data-loss-prevention solutions that help organizations keep their sensitive data confidential. I'm sure you'll agree that he brings some thoughtful insights into real-world data loss prevention (DLP).

May 19, 2010 8:08 AM EDT

This week's Security Levity is a follow-on from last week's. I want to talk about one more spammer trick: how they misuse spam filters, to try to get delivered to the inbox. I have first-hand intelligence confirming what many spam fighters have long-suspected...

May 12, 2010 8:08 AM EDT

In the next two weeks' Security Levity, I want to cover some more tricks that spammers employ to avoid spam filters. This time: messing around with the embedded web links in their messages.

May 05, 2010 8:08 AM EDT

In this week's Security Levity, I'm interviewing Cameron Brown, the VP of engineering at Sendio. Cameron has been architecting email protection systems for many years; he has an interesting perspective on balancing simplicity with "defense-in-depth".

April 28, 2010 8:08 AM EDT
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