Security 249 – Contact Tracing Redux

Yes, we talked about contact tracing in the past, but we got a request from the WhatsApp group to do it again.

Problems we discuss:

%age of people who would need to install this, and how reporting is honor based.

No one app for them all.

Each one is made separately. Testing woes.

Tom explains rotating BLE IDs.


Security 248 – Work From School

Virtual School starts up for many next week, and we have ideas on what you can do to help your kids be secure while learning.


Security 247 – Defcon Safe Mode Edition

This being the week before defcon, we discuss what we expect at the virtual defcon:

Teens charged with the twitter hack:

Garmin paid the ransomware for their user’s data:

Defcon discord:


Security 246 – Twitter Takeover

We try to describe what happened on twitter that lead to the account takeovers:

Cloudflare takes the internet down:

VPN may have logs:


Security 245 – Mac on ARM

Show notes: These are the show notes we wrote before talking about the topic. I tried to take out the inaccuracies, but some may remain.

CISC – Complete Instruction Set Computing

RISC – Reduced Instruction Set Computing Instructions are the abilities of the silicone. 

CISC is Intel/AMD/PowerPC

RISC is ARM and their variants.

Windows uses CISC, specifically the intel chipset to run. That is why we couldn’t boot windows until 2005 when Apple went intel.

ARM on mobile came about because of power requirements, really. ARM is better for battery life. Simply put, 30% (don’t ask for a citation) of an intel chip is keeping legacy instructions around.

Imagine what it could do if it could do something else with that power.

The issue is the windows codebase still relies on it. Microsoft tried with Surface RT, but failed, miserably.

So take an app like office or skype. It is written for x86. The work around is that they written it for the corresponding app stores. This is why skype on chromebooks didn’t work until they got apps working on ChromeOS.

Since apple controls everything, they can make this move. However they NEED the big players. W

e spoke about how awesome Office 365 is. They made the apps working on ARM. Now they can just port over some desktop features and call it a day.