Roger Johnsen
@rjohnsen.bsky.social
Norwegian Threat Hunter with Finnish roots. Lead Security Architect at Orkla IT. Language learner. High tech sweet potato.
Threema: CH4KZTBP
Threema: CH4KZTBP
Phishing sims remain a cornerstone of many security programs. A new IEEE S&P 2025 paper shows most users will eventually click, and training only helps at the margins. Maybe filtering, detection, and response should carry more weight - awareness as support, not driver. Still worth it?
#phishing
#phishing
CSDL | IEEE Computer Society
www.computer.org
October 10, 2025 at 8:07 PM
Phishing sims remain a cornerstone of many security programs. A new IEEE S&P 2025 paper shows most users will eventually click, and training only helps at the margins. Maybe filtering, detection, and response should carry more weight - awareness as support, not driver. Still worth it?
#phishing
#phishing
How it feels to educate upper floor on the value of proper incident response process.
#incidentresponse #securitymonth #SecurityOperations #soc
October 2, 2025 at 1:35 PM
How it feels to educate upper floor on the value of proper incident response process.
#incidentresponse #securitymonth #SecurityOperations #soc
TAK with Meshtastic is pretty neat. Live maps and team tracking off the grid, even on a Raspberry Pi. Could be handy for hiking or disaster stuff. #offgrid #meshtastic #situationalawareness #tak
www.offgridweb.com/gear/tactica...
www.offgridweb.com/gear/tactica...
Tactical Awareness Kit (TAK): Ultimate Guide
Bring your group’s navigation, comms, and surveillance capabilities into the digital age with the Tactical Awareness Kit (TAK) App.
www.offgridweb.com
September 30, 2025 at 5:34 PM
TAK with Meshtastic is pretty neat. Live maps and team tracking off the grid, even on a Raspberry Pi. Could be handy for hiking or disaster stuff. #offgrid #meshtastic #situationalawareness #tak
www.offgridweb.com/gear/tactica...
www.offgridweb.com/gear/tactica...
Secret Service disrupted an illegal telecom network in NYC. The setup could send 30M texts per min, enough to crash towers & 911. Linked to foreign govs, organized crime & trafficking. So - is this the start? #CyberThreat #TelecomSecurity
www.cbsnews.com/news/u-s-sec...
www.cbsnews.com/news/u-s-sec...
U.S. Secret Service disrupts telecom network that threatened NYC during U.N. General Assembly
Early analysis shows the network was used for communication between foreign governments and individuals known to U.S. law enforcement.
www.cbsnews.com
September 23, 2025 at 2:29 PM
Secret Service disrupted an illegal telecom network in NYC. The setup could send 30M texts per min, enough to crash towers & 911. Linked to foreign govs, organized crime & trafficking. So - is this the start? #CyberThreat #TelecomSecurity
www.cbsnews.com/news/u-s-sec...
www.cbsnews.com/news/u-s-sec...
Quality is the currency of credibility. Without it, trust disappears. And in security, trust is everything: confidentiality, integrity, availability – all built on quality.
#quality #integrity #security #trust #credibility #confidentuality #availability
#quality #integrity #security #trust #credibility #confidentuality #availability
September 15, 2025 at 5:22 PM
Quality is the currency of credibility. Without it, trust disappears. And in security, trust is everything: confidentiality, integrity, availability – all built on quality.
#quality #integrity #security #trust #credibility #confidentuality #availability
#quality #integrity #security #trust #credibility #confidentuality #availability
China’s Great Firewall suffers its biggest leak ever as 500GB of source code and docs spill online. Censorship tool has been sold to three different countries. #china #firewall #leak #infosec
www.tomshardware.com/tech-industr...
www.tomshardware.com/tech-industr...
China’s Great Firewall suffers its biggest leak ever as 500GB of source code and docs spill online — censorship tool has been sold to three different countries
Leaks tie China’s state-grade DPI gear to deployments in Myanmar, Pakistan, and beyond.
www.tomshardware.com
September 14, 2025 at 2:54 PM
China’s Great Firewall suffers its biggest leak ever as 500GB of source code and docs spill online. Censorship tool has been sold to three different countries. #china #firewall #leak #infosec
www.tomshardware.com/tech-industr...
www.tomshardware.com/tech-industr...
Cheap SDRs can track drones and detect jammers. Low-cost RF tools are changing the game for security, privacy, and open-source intelligence. Watch here: youtu.be/nNEHPiEcCMY?... #SDR #OSINT #Drone #Cybersecurity #SIGINT
Using Cheap Software Defined Radios to Track Drones and Jammers
YouTube video by TREX LABS
youtu.be
September 14, 2025 at 6:44 AM
Cheap SDRs can track drones and detect jammers. Low-cost RF tools are changing the game for security, privacy, and open-source intelligence. Watch here: youtu.be/nNEHPiEcCMY?... #SDR #OSINT #Drone #Cybersecurity #SIGINT
Checking out Meshtastic, open-source mesh radios that work without cell towers or internet. Feels like something Norway really needs with our mountains, forests & storms. Or at least nurture my nerdy side.
#Meshtastic #Norway #Preparedness #OpenSource
#Meshtastic #Norway #Preparedness #OpenSource
September 12, 2025 at 5:20 PM
Checking out Meshtastic, open-source mesh radios that work without cell towers or internet. Feels like something Norway really needs with our mountains, forests & storms. Or at least nurture my nerdy side.
#Meshtastic #Norway #Preparedness #OpenSource
#Meshtastic #Norway #Preparedness #OpenSource
This is the best documentary I have ever seen on SOC analysts, threathunters and hackers ever! #soc #threathunting #hackers youtu.be/6zOarcL1BSc?...
Sardine Feeding Frenzy with Sharks, Penguins and More | The Hunt | BBC Earth
YouTube video by BBC Earth
youtu.be
June 20, 2025 at 6:48 AM
This is the best documentary I have ever seen on SOC analysts, threathunters and hackers ever! #soc #threathunting #hackers youtu.be/6zOarcL1BSc?...
Strangely enough, today was the first time I truly connected with Pearl Jam. I’ve listened to their music off and on over the years, but for some reason, it finally clicked today. Hmmmm, interesting.
June 12, 2025 at 3:39 PM
Strangely enough, today was the first time I truly connected with Pearl Jam. I’ve listened to their music off and on over the years, but for some reason, it finally clicked today. Hmmmm, interesting.
For those politely asking whats the status of my threathunt book project, here's a quick update: I'll return to add content shortly. Been busy for the past months due to changing jobs internally at work and taking care of my corgi dog due to him having a back prolapse. He's up and walking now!
June 6, 2025 at 5:27 AM
For those politely asking whats the status of my threathunt book project, here's a quick update: I'll return to add content shortly. Been busy for the past months due to changing jobs internally at work and taking care of my corgi dog due to him having a back prolapse. He's up and walking now!
Just read another "protect your data from hackers" article. Cool. But what about the XX years of digital breadcrumbs we’ve already spilled all over the internet? No advice for that? Great. Thanks.
#CyberSecurity #Privacy #DataFootprint #Infosec #AI
#CyberSecurity #Privacy #DataFootprint #Infosec #AI
May 27, 2025 at 6:40 PM
Just read another "protect your data from hackers" article. Cool. But what about the XX years of digital breadcrumbs we’ve already spilled all over the internet? No advice for that? Great. Thanks.
#CyberSecurity #Privacy #DataFootprint #Infosec #AI
#CyberSecurity #Privacy #DataFootprint #Infosec #AI
Time flies. Already three weeks since corgi dog had a back prolapse and had to be rushed to the nearest animal hospital some 3 hours drive away. Been busy training him after the operation - luckily he's recovering fast and are now able to walk somewhat normally. #corgi
May 26, 2025 at 11:05 AM
Time flies. Already three weeks since corgi dog had a back prolapse and had to be rushed to the nearest animal hospital some 3 hours drive away. Been busy training him after the operation - luckily he's recovering fast and are now able to walk somewhat normally. #corgi
I am a bit sceptic when it comes to books and classes on SOC stating "for this situation, solve it THIS way". Not to point a finger at someone, but, not all situations are 100% the same.
May 9, 2025 at 5:17 PM
I am a bit sceptic when it comes to books and classes on SOC stating "for this situation, solve it THIS way". Not to point a finger at someone, but, not all situations are 100% the same.
This gem from #AttackIQ should be on every manager’s reading list. It breaks down how to align cybersecurity with real-world threats. Clear, practical, and relevant for both technical and business leaders.
www.attackiq.com/wp-content/u...
www.attackiq.com/wp-content/u...
www.attackiq.com
May 5, 2025 at 4:58 PM
This gem from #AttackIQ should be on every manager’s reading list. It breaks down how to align cybersecurity with real-world threats. Clear, practical, and relevant for both technical and business leaders.
www.attackiq.com/wp-content/u...
www.attackiq.com/wp-content/u...
So ... I have been thinking for some years that I should try to obtain a HAM radio license. Ordered thevstudy materials yesterday.
April 21, 2025 at 1:54 PM
So ... I have been thinking for some years that I should try to obtain a HAM radio license. Ordered thevstudy materials yesterday.
Now this is fascinating on a Sunday: #AREDN (Amateur Radio Emergency Data Network). A high-speed, self-healing mesh network built by ham radio operators for emergency comms. It auto-connects with nearby nodes to create a resilient, decentralized web. Nice!
www.arednmesh.org/content/supp...
www.arednmesh.org/content/supp...
Supported Devices | Amateur Radio Emergency Data Network
www.arednmesh.org
April 20, 2025 at 7:11 PM
Now this is fascinating on a Sunday: #AREDN (Amateur Radio Emergency Data Network). A high-speed, self-healing mesh network built by ham radio operators for emergency comms. It auto-connects with nearby nodes to create a resilient, decentralized web. Nice!
www.arednmesh.org/content/supp...
www.arednmesh.org/content/supp...
Celebrating easter eating some #mämmi with cream. This is a traditional #Finnish dessert made of water, rye flour, ground malted rye, salt, and dried, ground orange zest. Obtained a packet from #Fazer brand whilst shopping in Sweeden today. Have eaten it several times before. I like it it a lot!
April 19, 2025 at 7:31 PM
Cybersecurity today in one image: the experienced dog shows off a yo-yo (aka XDR), asks the junior if they want to try, and immediately drops it in their lap with zero instructions, documentation, or context. ‘Cool tool. Good luck.’
April 16, 2025 at 8:30 PM
Cybersecurity today in one image: the experienced dog shows off a yo-yo (aka XDR), asks the junior if they want to try, and immediately drops it in their lap with zero instructions, documentation, or context. ‘Cool tool. Good luck.’
The older I get, the more I value not spending time on tech to relax. Playing an instrument, reading a book, or just taking a bike ride — priceless!
April 6, 2025 at 4:51 PM
The older I get, the more I value not spending time on tech to relax. Playing an instrument, reading a book, or just taking a bike ride — priceless!
Running into an obstacle? Sometimes the best move is to step back, put it away, and sleep on it. Clarity comes with rest. #ProblemSolving #ThinkItOver
March 29, 2025 at 8:34 PM
Running into an obstacle? Sometimes the best move is to step back, put it away, and sleep on it. Clarity comes with rest. #ProblemSolving #ThinkItOver
This week's hot topic seems to be that one should have an exit strategy in case American technology becomes illegal. I’m really wondering what an exit would entail since everything we use is American tech - Azure, AWS, GCP, and also SIEM, XDR, firewalls. What is the real alternative, if I may ask?
March 20, 2025 at 7:15 PM
This week's hot topic seems to be that one should have an exit strategy in case American technology becomes illegal. I’m really wondering what an exit would entail since everything we use is American tech - Azure, AWS, GCP, and also SIEM, XDR, firewalls. What is the real alternative, if I may ask?
I've been reviewing some online security training portals lately for potential use in training sessions. Surprising how many lack proper source references and a structured, progressive learning approach. Not calling out any by name, but it's a bit disappointing...
March 11, 2025 at 7:33 PM
I've been reviewing some online security training portals lately for potential use in training sessions. Surprising how many lack proper source references and a structured, progressive learning approach. Not calling out any by name, but it's a bit disappointing...
Spent most of the day writing a log shipper in Golang. Why? Because I can and I find programming relaxing.
March 1, 2025 at 8:15 PM
Spent most of the day writing a log shipper in Golang. Why? Because I can and I find programming relaxing.
With all the security companies and organizations releasing their own "state of security" reports, has anyone compared them to identify discrepancies? Asking for a friend.
February 26, 2025 at 5:21 AM
With all the security companies and organizations releasing their own "state of security" reports, has anyone compared them to identify discrepancies? Asking for a friend.