What if that ordinary JPG is carrying a secret? See how Linux steganography hides encrypted data in plain sight.

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Can an ordinary vacation photo secretly contain an encrypted file?
Absolutely.

We'l take a practical look at steganography on Linux -:

• how it differs from encryption,
• how data can be hidden inside JPG images, and
• how easily that hidden data can be recovered later.

We'll:

• demonstrate tools such as steghide,
• discuss alternatives including OpenStego and OutGuess, and

look at the limitations:

• recompression,
• social media uploads,
• file-size clues, and :
• steganalysis.

Come see how it works - and why 'hidden"does not necessarily mean
"undetectable".

This @6:30om CDT is our basic tutorial...
BASE Topic: Steganography in Linux

Presenter Lee Lammert , Chief Scientist of OmniTec Corp.

@ ~7pm we'll have announcements, intros, & a short Q&A, ...
@ before 7:15pm CDT we should start our main topic...

MAIN Topic: Linux and the RISC-V Architecture

Presenter:Carl Perry

Carl Perry is passionate about Linux System Administration, Cloud Computing, Cloud Storage, and Network Administration.

My goals are to work w distributed systems & emerging tech. An organizer for "Works with RISC-V" ([workswithriscv.net](https://www.google.com/url?q=http://workswithriscv.net&sa=D&source=calendar&usd=2&usg=AOvVaw3F5bxDGmj039QnpIva6t0B)), he helps promote RISC-V developer relations.

RISC is a broad design style for computer processors, while RISC-V is a specific, open-src set of rules based on that style. Core Concepts:

• RISC-V: A modern, specific project started in 2010 at UC Berkeley that uses the RISC idea.
• RISC (Reduced Instruction Set Computer): A general philosophy where chips use simple, fast commands that take the same short amount of time to run. Older examples include ARM and MIPS.

Key Differences

• Ownership: RISC is just a concept used by many companies. RISC-V is a free, open standard managed by RISC-V International.
• Cost: Traditional RISC chips (like ARM) require expensive licenses and fees to use. RISC-V is free for anyone to use and change without paying royalties.
• Customization: Traditional RISC designs are rigid. RISC-V lets builders add optional parts (like math or AI helpers) depending on what they need.

Much of the above from Google. More soon.

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[http://www.sluug.org/](https://www.google.com/url?q=http://www.sluug.org/&sa=D&source=calendar&usd=2&usg=AOvVaw1pCygITLUCwj9arN6WP3QV)

The URL link to connection instructions for this meetng is posted earlier on the day of the meetng, at the above home page. It is the link called "linked here".** ONLINE MEETINGS ONLY until further notice.* ONLINE sessions will use a remote video meeting service.* HOW TO CONNECT instructions will be on the [https://www.sluug.org/next.html](https://www.google.com/url?q=https://www.sluug.org/next.html&sa=D&source=calendar&usd=2&usg=AOvVaw2y-mJu_j4U7vYt-hMkTF8z) web page and on our mailing lists. Note that your browser cache may need to be refreshed each time you check the web page for the instructions.** We will open the remote session at about 6:00 PM, so that you can join early to test sharing your microphone, screen and video camera.

Meetings are every 2nd Wednesday of the month from 6:30 PM to 9:00 PM.

The URL link to instructions at the www.sluug.org home page, are posted the day prior to this remote ZOOM meeting. The "next" link is called "linked here". You may have to refresh your browser after each time you check.

ONLINE MEETINGS ONLY until further notice.
ONLINE session will use remote video software.
CONNECTION instructions will be on the www.sluug.org web page and our mailing lists. Note that your browser cache may need to be refreshed each time you check the above web page for the instructions. We will open the remote session at about 6:00 PM, so that you can join early to test your microphone, screen and video sharing.

Details will be published on https://www.sluug.org/ when available.3