Joel Rosenblatt

Director of Computer and Network Security

Columbia University


Positive or Negative, Security Needs to be Right

Posted on: 28 Apr 2015

One of the aphorisms used in security is, “We have to be right all of the time, and the bad guys only have to be right once.”  While this may…

If Only Email Could Fix My Security Problems

Posted on: 21 Apr 2015

Just for fun, I decided to count how many unsolicited emails I got in a 24 hour period offering to either fix my security problems, fix my network problems, fix…

Privacy Is Not Dead, But It Is On Life Support

Posted on: 02 Apr 2015

As a security professional, I have an ongoing love/hate relationship with privacy.  I have always been the person supporting privacy policies at the University, I even have Privacy as one…

Cybersecurity Comes to Prime Time

Posted on: 10 Mar 2015

I watched the latest show in the “CSI” franchise last night – CSI: Cyber (on CBS) and my thoughts were “There goes the neighborhood.” I must say that I’m not…

Be Very, Very Quiet – Your Devices May Be Listening

Posted on: 11 Feb 2015

According to Wikipedia, “The Internet of Things (IoT) is the interconnection of uniquely identifiable embedded computing devices within the existing Internet infrastructure. Typically, IoT is expected to offer advanced connectivity of devices, systems, and…

My Security Fantasy

Posted on: 29 Jan 2015

My biggest security problems all start with authentication.  If you look at the major hacks that have taken place in the last year, you can trace most of them back…

Walking the Security Tightrope

Posted on: 20 Nov 2014

Some 38 years ago, I started working for the systems group at CUCCA (Columbia Center for Computing Activities).  I was fresh out of engineering school (Columbia, by coincidence) and a…

Security for the Holidays

Posted on: 29 Oct 2014

The holiday season is filled with opportunities for the Bad Guys to take advantage of people who are filled with the holiday spirit, out and about having a good time…

Moving to the Cloud: Resistance is Futile

Posted on: 07 Oct 2014

At some point, I must have drunk the Cloud Kool-Aid.  I find that despite my best efforts, I no longer develop the sinking feeling in the pit of my stomach…

Why Is Everything Turning Into a Reality TV Show?

Posted on: 28 Aug 2014

Someone recently pointed out an article to me:  ‘Big 12 beats Ivy League – in cybersecurity’ I didn’t realize that there was a competition between schools as to who does…