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DATA MASKING WITH CRIBL STREAM

September 30, 2021
Categories: Learn
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In a past life, at our regularly scheduled IT team meeting, one of my engineers
mentioned he had detected some cleartext Social Security Numbers (SSNs) in one
of our logs. You’d have thought I brought a bowl of Gaegogi soup to a PETA
conference. All I wanted to do was obscure some Social Security numbers in my
logs!

The security guys started screaming about HIPPA, GDPR, PCI, and the Privacy act
of 1974. 1974! We didn’t even have computers then. I know; I was there. Then our
security consultant started talking about the need to be compliant with the NIST
publication. Blah, blah, blah. Finally, a member of the NOC team mentioned they
needed most of the data but couldn’t care less about the SSNs. I was just about
to say delete it all, but before I got the words out, the legal team rep – you
know he just came for the free lunch – stated we needed to retain the complete
data set for compliance purposes. Urgh, we were quickly going off the rails, but
thank God, at that very moment, the food arrived, and everyone became more
focused on getting the right dipping sauce.

This gave me time to do a quick Google search and easily found lots of
information on Personally identifiable information (PII) and what was required
to protect it. Another stroke of luck, after lunch, we were getting a briefing
on the value of 5G, Wi-Fi 6, or Wi-Fi 7. So, while they were learning about the
latest wireless technology of tomorrow, I could dig into the issue and figure
out how to address everyone’s needs and concerns about protecting PII.

I figured a search on the topic of log security would be a good starting point.
Bad idea! It resulted in ~3,060,000,000 results (0.64 seconds). A quick scan
down the page, and I saw the word observability several times by different
vendors. There were so many results to choose from, and I started to think there
should be an “unobservability.” That might provide some actual direction. So it
wasn’t a clean fit, but it did finally get me to pages that appeared to try and
help me, but only if I had an advanced EE degree from MIT. The pages started
with headings like data masking, obfuscation, and anonymization.

So far, so good, but midway through the second paragraph, I thought I was
reading a foreign language. They called it Regex (i.e. {\.(?\w+-\w+\d+)-`), but
I knew it was really Klingon ( `tlhIngan Hol Dajatlhʼaʼ?`). I didn’t understand
it and knew no one on my team was fluent with it either. But I kept reading
anyway. Soon I started to understand a little and eventually came across
something called Match Regex and Replace Expression as it applied to masking
data. This made sense, but I still needed to implement this without calling HR
about a new headcount to configure all of this.


ENTER STREAM



Luckily (again), I came across a Cribl blog showing how to learn SSN masking in
less than 10 minutes and for FREE. It sounded too good to be true, but I grabbed
a new cup of coffee and settled in to watch anyway.

Wow, the video not only actually made sense, but it appeared to be something we
could do internally, with the existing team, and at no additional cost. There
was even a link to a deeper dive training for those implementing it. With
Stream, you can mask data using various techniques by applying the Masking
Function on any event that matches any arbitrary condition.

Well, I think I have the SSN crisis of 2021 resolved. Next, I need to find a way
to reduce the volume of logs I am storing. Maybe Stream can help here too?
That’s a story for another day, though.

> The fastest way to get started with Cribl Stream is to sign-up at Cribl.Cloud.
> You can process up to 1 TB of throughput per day at no cost. Sign-up and start
> using Stream within a few minutes.



Back To Top
.

BLOG




DATA HERE, DATA THERE, DATA EVERYWHERE: THE BENEFITS OF ROUTING DATA WITH CRIBL

Read More
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BLOG




HOW CRIBL STREAM CAN ENHANCE DIGITAL OPERATIONAL RESILIENCE UNDER DORA WITHIN
FINANCIAL SERVICES

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