Bill Graydon @access_ctrl
🇨🇦 I tweet about physical security and pen testing - no personal opinions, how my day went, or other extraneous fluff. Toronto Joined July 2020-
Tweets244
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Thank you to everyone who came to my biohacking talk at HOPE XV! It was a very great opportunity for me to talk about a community near and dear to my heart for several minutes.
I uh... need to get better at tweeting when I'm going to be speaking. I'll post the recording link when done!
I uh... need to get better at tweeting when I'm going to be speaking. I'll post the recording link when done!
TIL that "talk show" style camera setups are not optimal for doors! Great hosts and very impressive setup behind the scenes though!
TIL that "talk show" style camera setups are not optimal for doors! Great hosts and very impressive setup behind the scenes though!
🔴 AHORA RFID Badge Hacking, dictada por @physsec | Sala C3
If you review the in-plane safety information, you can see exactly where the PSV staff are sitting on this flight.
#safecracking #Yeggs entered an empty building next door, then passing through the wall into your target. The #safecrackers then made off with the safe that contained $1 million in merch from the jewelry shop. nbcmiami.com/news/local/new… #safecracker #truecrime #crimescene #heist
It's official: what happens in Vegas, stays in Vegas! Surely the sign of a successful @defcon
Friends at DEF CON right now - the PSV crew is gonna be doing a small party tomorrow at 22:00 in one of the nice Bally's (Horseshoe) suites, got lots of food and beverages. DM me if you're interested (even if we've never met before!) and I'll let you know the room # and details!
Our village talk "Flipping Locks: Remote Badge Cloning with the Flipper Zero" by @sh0ckSec and @_BadCharacters is SUPER popular! Due to the demand (and huge line outside the village trying to get in), they'll be giving their talk again TODAY at 4:30pm!
Come hack some door access systems with me at Defcon’s @physsec
If you're at @CypherCon this year, come see me talk about defeating alarms some more tomorrow at 9PM in the Circle Track! Or say hi at the @physsec village! cyphercon.com/presentation/d…
@access_ctrl is demonstrating some alarm bypasses on our alarmed mini doors! #physsec #alarmbypass #physicalsecurity
𝗡𝗘𝗪 𝗣𝗢𝗗𝗖𝗔𝗦𝗧 𝗘𝗣𝗜𝗦𝗢𝗗𝗘! 𝗘𝗽. 𝟭𝟵 - 𝗢𝗰𝗲𝗮𝗻’𝘀 𝗘𝗹𝗲𝘃𝗲𝗻 𝗶𝗻 𝗥𝗲𝗮𝗹 𝗟𝗶𝗳𝗲 // 𝗕𝗶𝗹𝗹 𝗚𝗿𝗮𝘆𝗱𝗼𝗻 🎙 Listen now: beyondtrust.com/podcast/ep-19-… @access_ctrl #socialengineering #penetrationtesting #Cybersecurity #pentesting
Had a great time on @BeyondTrust's The Adventures of Alice and Bob podcast! Giv'er a listen if you want to hear some fun hacks, stories and my general ramblings on physical pen testing! open.spotify.com/episode/6dzDhE… podcasts.apple.com/us/podcast/ep-… beyondtrust.com/podcast/ep-19-…
I'll be instructing a good portion of this event - check it out if you're in the Toronto area! We have some awesome new content planned.
I'll be instructing a good portion of this event - check it out if you're in the Toronto area! We have some awesome new content planned.
Life changing discovery today... pizza boxes make excellent chip trays for impromptu red team locksmithing while on the road!
Every time I come back to Europe, I’m reminded of the absolute batshit insanity that cookie warnings are. Idiotic, poorly thought out, user experience-killing compliance garbage that can’t possibly do anything to improve privacy in any meaningful way whatsoever.
If you missed or haven't seen Bill Graydon's talk on interactive element exploits, you should! youtu.be/3OmyVJDjTr4

menorah mossman @jeffthemossman
2K Followers 4K Following the mossman. proud @utoledo alum. IT/security/locksmithing #teamchallahback #freemason #RIPDonReiber
Good Guy @BandEAtoZ
629 Followers 102 Following Fan of everything from Surreptitious Entry to Forcible Entry Techniques. My mama had me tested: seems I am Out Of Scope. Chief, Special Requirements Staff.
LockpickingDev @LockpickingDev
1K Followers 362 Following 📚Teaching people the art of lockpicking. Lockpicking 9 years, lockpicking teacher, lockpicking competitions, custom lockpicks, and YouTuber #locksport
Make It Hackin @MakeItHackin
5K Followers 617 Following Maker, Hacker, Engineer. TikTok/YouTube/Snapchat/Instagram and other links below:
Charles Current @charlescurrent
394 Followers 327 Following The Lock Sportscast podcast and Charles Builds Crap on YouTube
DC416 - DEFCON Toront... @defcon_toronto
1K Followers 116 Following Official Toronto DEF CON group - Follow us on Eventbrite to learn about our events: https://t.co/gK5KNemkPQ
Hugo @Hugo38413820636
0 Followers 2K Following
brechtisbrecht @brechtisbrecht
0 Followers 445 Following
Bill @Bill70141017
0 Followers 21 Following
tsuki @tsuki7000
5 Followers 25 Following
Klaxon @Klaxon_Security
8 Followers 209 Following Klaxon delivers physical security expertise to private and public clients. -Physical Red Team Engagements -Threat and Vulnerability Assessments -& more
Jean Galt @JeanGalt1
107 Followers 492 Following Crypto degenerate and jiu-jitsu enthusiast. The shadowy super-coder that Elizabeth Warren warned you about. $WOO CMT II
Marco Granato @MarcoGranato6
63 Followers 943 Following
Adrian @add1kt3dOn3
16 Followers 350 Following
te la digo @28Cesarin
138 Followers 597 Following
liam @liamssto
12 Followers 307 Following
thEdude702 @eddiep702
543 Followers 5K Following Too weird to live, too rare to die! ~ Hunter S. Thompson
Aurelio Mendoza @MendozaAu5215
1 Followers 15 Following
BerylLeacock @7o8NBBPTfs1AXd8
61 Followers 7K Following
Amandine Gagnon-Heber... @agagnonhebert
176 Followers 1K Following Pentester padawan 💻. One of a kind. Humans and Machines are my friends, but both give me headaches! Twitter as my bulletin board.
Piyush Kumar @PiyushK25673517
0 Followers 1K Following
Joe Fagan @joefagan
175 Followers 2K Following Neither notable, nor verified, legacy or otherwise. ☒ Father, Husband, Photographer, and Oxford Comma Advocate.
Emily @emily_jackson98
1K Followers 3K Following
mts @mts513476386816
0 Followers 5 Following
Evan Boyce @evboyce
1K Followers 2K Following Let's make our cities better. More housing, more transit, more bikes, fewer cars. Working in renewables. Infrequently checking this acct, reach out on Bsky 🦋
Naman Devnani @naman_devnani
414 Followers 7K Following Security Researcher | Purple Team | Bug Hunter | CTF Player | Science & Tech Enthusiast | R&D | All-Source Intelligence | CAP | DCSP | TTIA | BCDE | COL
Jona Young @jonayoung
85 Followers 421 Following
Vinny Greer @VinnyGreer
10 Followers 63 Following Computer hardware developer, space junkie, history and nature lover. Go Boilermakers!
Julian Len @julianlen
335 Followers 579 Following Rootstock🌱 cccccbcfrllvltvttvekcgkbecgucgiketdtivfhjcnr
Tim Dafoe @timdafoe
988 Followers 914 Following Canadian information security professional. CSA P125 TC and SMC JTC 1/SC 27 member. Former Guardent, UUNET. All opinions are my own.
Caffeinated @fenix_ca
46 Followers 241 Following Shoot things. Throw things at other things. Puts syrup on things.
Barry Wels @barrywels
841 Followers 266 Following Non-destructive lock opening, trainer, red team, physical pentester, flaps & seals, forensics, RF, RFID, TSCM, crypto and more. Solver of problems and puzzles.
Toronto East @toronto_east_
24 Followers 246 Following
BeyondTrust DACH @BeyondTrust_D
2K Followers 2K Following Mit BeyondTrust erhalten Unternehmen die erforderliche Visibilität und Kontrolle zur Risikobegrenzung, Least-Privilege-Umsetzung und Produktivitätssteigerung.
goproslowyo @goproslowyo
1K Followers 4K Following Hacker. (SRE|DevOps|Cloud|Security) Professional. prev:🚀, @Google, @Apple and @Twilio/@SendGrid who's tweets are these? they're definitely not mine
Nate Sales @natesales
137 Followers 375 Following systems + security + applied physics. co-founder @TinfoilAI
Sick.Codes @sickcodes
17K Followers 6K Following Security researcher 🇦🇺 Good-faith hacking 🤡 Weaponizing source code 🧬 https://t.co/qulkQaGWp9
Jose Cervoni 🇺🇸... @Cervonij
47 Followers 149 Following Security Specialist, Dad, Nerd, opinions are my own.
DC202 @202hackers
225 Followers 62 Following DEFCON in the nation's capital. Iconoclastic, unconventional, unprofessional.
Carlos Calderón @carlos8calderon
0 Followers 2 Following
RealFakeAccount @RealFakeAccou12
419 Followers 995 Following Security Researchers / OSCP / Founder of UofTCTF @uoft
Maram El-Salamouny @maram_elsal
78 Followers 537 Following Cloud Security. Software Developer. Powerlifting newbie. 🇪🇬🇨🇦#DeenOverDunya
RubberBanned @R0brBun7
2K Followers 756 Following Professional Locksmith. Martial Artist, archer, amateur hacker. DM me your lock questions. Physical security hot takes and industry related bad posts.
menorah mossman @jeffthemossman
2K Followers 4K Following the mossman. proud @utoledo alum. IT/security/locksmithing #teamchallahback #freemason #RIPDonReiber
Good Guy @BandEAtoZ
629 Followers 102 Following Fan of everything from Surreptitious Entry to Forcible Entry Techniques. My mama had me tested: seems I am Out Of Scope. Chief, Special Requirements Staff.
Lock Noob @LockNoob1
6K Followers 148 Following This is the Lock Noob Twitter. I am a lockpicker, locksporter and tool designer. I also run a YouTube channel. #locksport #lockpicking
LockpickingDev @LockpickingDev
1K Followers 362 Following 📚Teaching people the art of lockpicking. Lockpicking 9 years, lockpicking teacher, lockpicking competitions, custom lockpicks, and YouTuber #locksport
Make It Hackin @MakeItHackin
5K Followers 617 Following Maker, Hacker, Engineer. TikTok/YouTube/Snapchat/Instagram and other links below:
Charles Current @charlescurrent
394 Followers 327 Following The Lock Sportscast podcast and Charles Builds Crap on YouTube
DC416 - DEFCON Toront... @defcon_toronto
1K Followers 116 Following Official Toronto DEF CON group - Follow us on Eventbrite to learn about our events: https://t.co/gK5KNemkPQ
Canadian Institute fo... @CITA_ICAT
1K Followers 244 Following CITA is a nationally supported research center for studies in theoretical astrophysics at @UofT
Oscar the Grouch @OscarTheGrouch
317K Followers 13 Following Officially grouchy from Sesame Street. Scram!
Fast Food Enjoyer @Glawk_40
460 Followers 184 Following P̶R̶O̶B̶L̶E̶M̶ S̶O̶L̶V̶E̶R̶ God's horniest engineer. https://t.co/cqYIzhkCNI I walk so fast. Everyone get out of my way.
Eric 🐇 @Mammoth
2K Followers 344 Following Sheet metal, rabbits, cameras | I run @McMasterDaily bnuuy
UofTAstroTours @UofTAstroTours
379 Followers 57 Following UofT Free Astronomy Public Tours on the first Thursday of almost every month. Includes a free public talk, telescope observing, and planetarium shows. #SciComm
Dunlap Institute @DunlapInstitute
3K Followers 799 Following Astronomy research institute at #UofT. Innovative tech, groundbreaking research, world-class training, & public outreach. Cover: D. Chung @uoft @uoftartsci
Evan Boyce @evboyce
1K Followers 2K Following Let's make our cities better. More housing, more transit, more bikes, fewer cars. Working in renewables. Infrequently checking this acct, reach out on Bsky 🦋
Tim Dafoe @timdafoe
988 Followers 914 Following Canadian information security professional. CSA P125 TC and SMC JTC 1/SC 27 member. Former Guardent, UUNET. All opinions are my own.
Barry Wels @barrywels
841 Followers 266 Following Non-destructive lock opening, trainer, red team, physical pentester, flaps & seals, forensics, RF, RFID, TSCM, crypto and more. Solver of problems and puzzles.
Sick.Codes @sickcodes
17K Followers 6K Following Security researcher 🇦🇺 Good-faith hacking 🤡 Weaponizing source code 🧬 https://t.co/qulkQaGWp9
Brian Halbach ☕️ @brianhalbach
1K Followers 6K Following Who has two thumbs and can count to ten. Does cyber security things | abyss gazer | opinions are my own | (he/him)
Maram El-Salamouny @maram_elsal
78 Followers 537 Following Cloud Security. Software Developer. Powerlifting newbie. 🇪🇬🇨🇦#DeenOverDunya
d1dymu5 @d1dymu5
568 Followers 534 Following #GentlemansLockPicks. Opinions are my own, not employer's.
Ali Haydaroglu @ali__haydaroglu
216 Followers 2K Following phd student @SWC_neuro @UCL; alum @uoftengineering engsci. (he/him) 🍉
Thomas Lin @deeef13_
44 Followers 95 Following Developer & SysAdmin 👨💻; Building software systems; I drink 🍻 and I fix things 🔧; PhD from UofT 🇨🇦; Spock is my role model 🖖 RT/Likes != endorsement
CYPHERCON @CypherCon
9K Followers 2K Following Wisconsin’s Largest Technology Conference - April 1-2, 2026 - 2500+ attendees meet downtown #Milwaukee at the Baird Center - #hackers #cybersecurity #InfoSec
Security Postings @PISecPostings
244 Followers 2K Following Articles Relating to the Private Investigation & Security Industry. Visit us at https://t.co/DH6qyGnuBv
Euz | Matthieu 🐙 @_Euzebius
3K Followers 2K Following Gamer, hacker. Purple teamer at 💜. Infosec swiss army knife. Don't panic, hack the planet. HTB 🇫🇷 ambassador : euz. I didn't choose InfoSec, it chose me.
BeyondTrust @BeyondTrust
14K Followers 9K Following The global cybersecurity leader protecting Paths to Privilege™ with an identity-centric approach.
Zlocks.ca @ZlocksCa
428 Followers 1K Following Twitter account for Zachary's Locks and Security. I mostly retweet articles related to #security, #locksmith, #doorhardware, #homesecurity in layers on weekdays
sh0ck @ DEFCON 33 @sh0ckSec
133 Followers 220 Following Red Teamer | RFID hacking + Physical Intrusions | 4x DEFCON Speaker | When you find out how simple it is to bypass your security, it can be quite shocking.
cackerman21 @cackerman21
394 Followers 2K Following 🏔️⛷️🎸 Encryption, Data Science, Linux, OSINT, RedTeam, SysAdmin, Energy, view not my own-ish, sui ipsius doctrine
Sourav @souravbaghz
2K Followers 1K Following Hacker | Automotive, IoT, Drone & Robotics Security | Undergrad with Cloud & Security |
samy k͓͓͓͓͓͓͓�... @samykamkar
62K Followers 4K Following think bad, do good. | https://t.co/qyiFryCVrs | cofounder @openpathsec
Steve Lehto @stevelehto
5K Followers 137 Following Attorney, Writer & Broadcaster: Cars & the Law. See me on YouTube. Patron Saint of low-volume production cars.
M4dH4t3r 🫠🤯🏴... @Th3_m4dH4t3r
43 Followers 231 Following Team color of Red, Breaker of Things, bringer of chaos, tequila bottle emptier. Pen Testing 💻, Drinking🥃, Traveling 🛫
———————... @da5ch0
8K Followers 4K Following FOLLOWS YOU • “Wir müssen wissen, wir werden wissen” -Hilbert • (he/they/him/them) • infosec and privacy aficionado • sec architect stuff
Viscido @viscido
399 Followers 530 Following Need coffee to hack ☕🤯 eCPPT | eCPTX | eWAPTX | eCXD | OSCP | Synack RedTeam member | Cobalt Core Member
jcache @_BadCharacters
133 Followers 795 Following researching pentesting, red teaming, RFID and other bad characters on the internet | OSCP
Lukas @mccull415
238 Followers 206 Following
Elizabeth Ramirez @tijuanera
1K Followers 1K Following Community Builder | Hacker Summer Camp 🛬 | BSidesLV
Technick (Looking For... @technick
806 Followers 664 Following Employee of the month at Initech. Sixth Generation Georgian transplant. 303/Infosec/Maker/Pilot/Adventurer/Privacy Advocate/Illuminati/Floridaman/Shenanigans.
Jaime Cabeza @InfoSecGeek
340 Followers 624 Following Tester of pens at Rapid7, gadget geek, pad lifter, capacitor exploder, never ending IoT pentest lab gear purchaser, possible AI. My opinions are my own.
Jerome D. Greco @JeromeDGreco
2K Followers 1K Following Find me on Bluesky: https://t.co/eR4aaYacwb. Tweets are my own, not my employer's.
Minister of Ungentlem... @chrisrockhacker
2K Followers 359 Following Cyber Merc - SIEMonster CISO. DEFCON 23 "I will Kill you" DEFCON 24 "How to overthrow a government". DEFCON 30 “Killer Hz - Terrorists Win” DarknetDiaries EP151
Supreme Court of Cana... @SCC_eng
46K Followers 31 Following Official Twitter account of the Supreme Court of Canada. Terms of use: https://t.co/NKR3XAymrK. Suivez-nous en français : @CSC_fra
Reece Martin @RM_Transit
33K Followers 767 Following Writer, Learning Enthusiast, Urbanist, Optimist, Traveller, Canadian. Passionate about making the world better.
LockeFang 🐉🔑 Lu... @LockeFang
203 Followers 233 Following Physical Security 'Professional' Model/Rig @ezri_VT Art: #LockePics Clips #LockeParts Job Pics #JobFang Twitch: https://t.co/XRccP2y8IX PFP: @doqmeet