Kalin KOZHUHAROV @thinrope
InfoSec (whitehat) hacker, Incident Responder, GCIH, CISSP, radiation freak, alpinist, parent/husband: order is time-dependent and often in flux thinrope.net Balingen, GERMANY Joined January 2010-
Tweets1K
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Followers265
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Following115
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Likes554
How should one think about a trusted Certificate Authority, when a SSL cert on their site had expired more than a year ago?? startfieldtech.com :-/ No easy way to contact them, will @GoDaddyHelp know? casecurity.ssllabs.com/analyze.html?d…
blog.google/products/chrom… Tabgroups! Great new feature for all users! And even greater for Google: now Google can finally have a painless human-driven feedback to improve its site classification algorithm into more categories...
Our team just applied to Startup World Cup @swc2020 #Credify #StartupWorldCup
We all live in a shitty time-place and #COVID19 is not the reason; it just prompted more people to look at it, yet not enough (people) yet.
I just signed a petition to ask the ISO to release the standards for ventilators. Sign if you think it is a good cause: change.org/p/internationa…
That sounds really bad... Looking at the list at the end... just underlines how important proper backup and real isolation of data is: zdnet.com/article/six-su… In other words, being #DFIR pro or not, you are not safe from making mistakes.
Still a few more hours (depending on TZ) to get a certificate issued on February 29th :-D Just realized after renewing mine KOZHUHAROV.de
#COVID2019 & #Fukushima2011: * a threat that we have no built-in sensors for * no means for citizens to detect * detection tech controlled by governments (subsidized healthcare) We at @safecast developed means to measure radiation, accessible to citizens, independent of govs...
Ian Goddard (a trusted source) says that the experts are worried about R0 and CFR values of #covid19 : youtu.be/7SXIzVinKB0 ... and that is worrying!
Kind of novel approach... theregister.co.uk/2020/02/11/for… Do you sign all your software with the same cert (without intermediate certs)? What happens if there is a problem (like above) with one specific version? Manage 1 cert per product+version? CRLs considered effective these days?
Hmm... Did NetworkSolutions @netsolcares just have a breach? Or my (long inactive) account was sent a password reset, just in case?? I'd prefer a better explanation when I get another one (e.g. what IP address requested it, and when. And WHY?)
That is what I call a real-time inventory system! They ran out of pineapple few customers before me :-( Do you keep an inventory (of devices, services, accounts) that is always up to date? You should.
When 2FA is not actually 2FA (or when your 2FA is not that hard to copy as with RSA SecureID software token)... Skip to p. 27 of the report. fox-it.com/en/news/whitep… Hey @foxit Can you please start adding (printed) pages to your PDFs? And interactive ToC?
東京での終電と言うストレスはやっぱスゴイ。それを悪用したコウイは明らかにコイではない。(周りの状況偵察によりの考え事)
See you at #avtokyo2019 or around, in Tokyo till 11/11.
今年の #avtokyo2019 にまず参加!今までいつも登録ミスしたり、遅れたり、よこ分からん問題に落ちたり、とりあえず個人スポンサーとしてチケット買っちゃいました。刺激あるプレゼンを楽しみにしてます!
Did you know that Apple included just a simple charge cable that looks like USB-C with your expensive machine? Don't try to image a Mac with it... LoL, at #FTday2019 in Karlsruhe.
リモート(海外)も参加できるようになって、ありがとう! #owaspjapan

Sen Ueno @sen_u
11K Followers 2K Following サイバーセキュリティの株式会社トライコーダ、OWASP Japan Chapter Leader など。飲むとすぐ寝る。 書籍『#セキュリティ1年生』2025年10月21日発売 https://t.co/Ztj8d1Ai5o
Typhon(テポ)/Shu... @Typhon666_death
6K Followers 5K Following AWSSecurityHero / SecurityConsultant / Locksmith / Organizer @security_jaws #retrogstudy / Headbanger\m/ / Multi-Cloud / CNAPP
三ツ矢 @328__
1K Followers 1K Following セキュリティのお仕事やってます。時々趣味で開発も。発言は全て個人のものです。 WebSecurity / cloudsec / JAWS-UG沖縄 / CISSP / OS(CP|WE|EP) / AWS DOP / AZ-500 / CARTP / CAWASP
Hardening Project @WASForum
2K Followers 56 Following Hardening Project / ハードニング競技会主催 since 2012 / 仮想APT集団 kuromame 6 / 2022年度グッドデザイン賞 / 2022年度 JNSA賞特別賞 / 令和6年度総務大臣奨励賞
Ahi @hyrfvh6543
0 Followers 487 Following
Thitee @ThiteeS7dLn8
10 Followers 656 Following
Даниел Слав... @DanielSlav26713
0 Followers 17 Following
Mathias Fuchs @mathias_fuchs
3K Followers 966 Following Something with IR and Intelligence @InfoGuardAG, Certified Instructor and author @SANSInstitute (@SANSEMEA), Former Principal IR Consultant @Mandiant
Al1min @md_alamina609
21 Followers 343 Following Cyber Security Analyst | | Ethical Hacker | Former : Instructor Department of Electrical & Electronic Engineering, City University, Dhaka Bangladesh
lucrecia brooks @kreebos
6 Followers 177 Following Im a headhunter , looking for software developers of all facets in the Eastern Europe Market, looking to change your career , Get in Touch with me.
Leo Gutiérrez @leonidasgtzr
582 Followers 3K Following Technical Software Architect, mexicano 🇲🇽 https://t.co/Wh8TFWrZJ7 https://t.co/l1FHA6WUPt https://t.co/VLMRkT8uNN
MUSIC_SHOW ENTERTAINM... @MUSIC_4_best_1
78 Followers 1K Following MUSIC_SHOW ENTERTAINMENTS JOIN US NOW Living Your Best Life Starts Here. For subscription inquiries, visit: https://t.co/vDWvGAlKWp…
あい@R&MStudio inc. @r_grey
3K Followers 2K Following インターネッツのおもしろいを収集してます。会社を経営しています。 ゲーム業界に多分15年くらい住んでいます。お店もいくつかやってます。 WiFiが無いと死にます。2歳です。エンジョイ勢。YouTuber見習いちゅう😘なりすましアカウントにご注意ください⚠️
Andrew Todd @auspicac... @auspicacious
87 Followers 142 Following Signal, noise, etc. https://t.co/F7AwR38cZr
qtrzyd59 @qtrzyd59
0 Followers 6 Following
d4rkm4tter (Mike Spic... @d4rkm4tter
13K Followers 4K Following #WiFiCactus | #WiFiKraken | Utah | @dc801 | free range wigler (ask @lintile) | AI Cyber the Cybers | Apex Storage x21/x16 designer
Andrea Barisani @AndreaBarisani
6K Followers 1K Following hacker | tamagopher | https://t.co/3S3EARrfoc
h3kt0r_ @h3kt0r_
87 Followers 2K Following h3kt0r_ is no Trojan ... At the moment doing cyber things in IT and OT. Other stuff is Wetware Hacking and Big Data 🔮🔬mostly in medical research.
𝗣𝗥𝗘𝗦𝗖�... @prescientsec
148 Followers 749 Following CREST & PCI Certified testing company. With 200+ Security Consultants, offices in New York, San Francisco and Toronto - Your security concerns are our business.
Soc Investigation @Bala_hacky
330 Followers 513 Following Home for Cyber Security Analyst & Incident Responders #informationsecurity #malware #cybersecurity #csirt #SIEM #cyberdefense #cyberattacks #mitre #IOC #IOAicanhaspii @icanhaspii
2K Followers 5K Following #Malware #Ransomware #DFIR #InfoSec #CyberSecurity #ThreatHunting #ThreatIntel #ForeverN00b #Mennonite Personal page, views don't represent employer.
Stevyn IronFeather �... @futurecodejp
817 Followers 5K Following 北海道のコンピュータ会社, IronFeather Journal (magazine), Nationwide radio show in Japan. https://t.co/z4WZfdO0GU #phun #zine #radio #hokkaido
dani daniel @danidan14207231
20 Followers 181 Following an American pornographic actress, stripper, and visual artist
みむら @mimura1133
5K Followers 3K Following 親方。組込機器の脆弱性診断を本業に、ローレイヤ(ハードウェア・ファームウェアなど)と Windows まわりでよく遊んでます。温泉と落語好き。SECCON 実行委員長(2023年から) 。個人の発言です。 (GXPN, GREM, GCFA, GCPN etc..)
フランソワ @REIWA_SECURITY
625 Followers 1K Following 情報セキュリティ&サイバーセキュリティ領域の転職エージェントしています。 備忘録として使用しています。
Helena Kozusnikova @HelenaKozusnik
96 Followers 60 Following
ACE Lab @ACE_Laboratory
747 Followers 385 Following Top-tier professional #datarecovery tools. Hardware & Software #PC3000 solutions for repairing #HDD, #RAID, #SSD, #SAS/SCSI, #Flash #NAND drives.
Ultra Auth @ultra_auth
1K Followers 3K Following Ultra Auth replaces email and passwords with public key cryptography and biometric authentication to eliminate identity theft.
ab3xy @ab3xy
87 Followers 569 Following
SCAM GUARDIANS @ScamGuardian1
1K Followers 5K Following Scam and Investment Investigators: research and information service for private investors, total scam protection and help services for victims.
10MAN @MKULTRONHACKING
158 Followers 5K Following MKULTRON: A superhuman school curriculum, grounded in critical analysis, practical skills and ESS' "tit for tat" and "betray first". Paul Ekman Group Certified.
linux-555 @linux_555
64 Followers 328 Following Developing Web security scanner and Security information portal.
Tomohiko Suzuki @tolemita
15 Followers 136 Following
Mr.Rabbit @01ra66it
3K Followers 1K Following Cybersecurity hobbyist. Speaker at Black Hat Asia, BSides Tokyo, BSides LV, Black Hat USA. Next: SecTor. CISSP/SSCP/CSAP.
ALFA Network Inc. @alfanetworkinc
4K Followers 127 Following For support & sales: https://t.co/vucr6UHfUX
Smart Health Monitori... @smart_health_ai
373 Followers 3K Following Smart Health project aims to use AI to predict chronic diseases complications for diabetes & cardiovascular diseases patients .
PATRICK CYBERSECURITY @patrick_infosec
47K Followers 48K Following #privacy #security #infosec #hacker #encryption #Marketing #Pentesting #Cybersecurity #Hosting #Server #Technology #Seo #Cloud #Network #Google #forensic #gdpr
Sen Ueno @sen_u
11K Followers 2K Following サイバーセキュリティの株式会社トライコーダ、OWASP Japan Chapter Leader など。飲むとすぐ寝る。 書籍『#セキュリティ1年生』2025年10月21日発売 https://t.co/Ztj8d1Ai5o
田中ザック (Zach... @yamatosecurity
9K Followers 1K Following On the fun never-ending journey of cyber security. Based in Kobe, Japan. ぼちぼちITセキュリティをやってます。 (詳細: https://t.co/EpxQ9LX3bp )
piyokango @piyokango
41K Followers 36 Following セキュリティインコです🐣Podcast #セキュリティのアレ に参加中🎤よろしくお願いします🐦プロフィール画像はアレティ(@aren0_e)さんに描いて頂きました😃 海外ニュースはBlueskyで発信中です https://t.co/US6KYUmWtA
Yosuke HASEGAWA @hasegawayosuke
13K Followers 592 Following 株式会社セキュアスカイ・テクノロジー取締役CTO / セキュリティ・キャンプ協議会代表理事 #seccamp / CODE BLUE 実行委員 #codeblue_jp / https://t.co/ENsYrOy0qt / 発言は個人の見解によるものですが、2023年からのステマ規制への対応のため所属を明確にしています
徳丸 浩 @ockeghem
66K Followers 2K Following 徳丸本の中の人 EGセキュアソリューションズCTO IPA非常勤職員 YouTubeチャンネル: https://t.co/NX2v3NLNEW 匿名での徳丸への質問はMondから https://t.co/fs3zeZicIl DMはどなたでも送信可能ですが、返信するとは限りません
オカダリョウタ... @okdt
4K Followers 1K Following 日本のセキュリティリサーチャ | アスタリスク・リサーチ代表📈 | 神戸デジタル・ラボCSA⚓️ | 神戸高専OB | BBT大学講師 | OWASP🐝Japan Leader | Hardening Project Organizer | SBOM CycloneDX | カレー🍛派|加速装置ほしい
三ツ矢 @328__
1K Followers 1K Following セキュリティのお仕事やってます。時々趣味で開発も。発言は全て個人のものです。 WebSecurity / cloudsec / JAWS-UG沖縄 / CISSP / OS(CP|WE|EP) / AWS DOP / AZ-500 / CARTP / CAWASP
Hardening Project @WASForum
2K Followers 56 Following Hardening Project / ハードニング競技会主催 since 2012 / 仮想APT集団 kuromame 6 / 2022年度グッドデザイン賞 / 2022年度 JNSA賞特別賞 / 令和6年度総務大臣奨励賞
JPCERTコーディネ... @jpcert
32K Followers 6 Following JPCERTコーディネーションセンター(JPCERT/CC)の公式アカウントです。情報セキュリティに関する注意喚起、公開資料やセミナー情報などを発信しています。ご意見、ご要望などへの返信をご希望の際は[email protected]にご送付ください。
Youki Kadobayashi @youki10
707 Followers 70 Following 私はリスク認識を共有するためにツイッターを使っています。最近バツが悪いので、青い鳥も使い始めました。
NCO国家サイバー... @cas_cyberpr
53K Followers 26 Following 国家サイバー統括室(NCO)の公式アカウントです。サイバーセキュリティに関する国の取組や普及啓発等の情報を発信しています。
WifiCable @WifiCable_
102 Followers 51 Following Researching, modding and making cool electronics because it's fun
Mathias Fuchs @mathias_fuchs
3K Followers 966 Following Something with IR and Intelligence @InfoGuardAG, Certified Instructor and author @SANSInstitute (@SANSEMEA), Former Principal IR Consultant @Mandiant
camelcamelcamel.com @camelcamelcamel
5K Followers 6 Following Track prices at Amazon and get notified when they drop.
Exabeam @exabeam
5K Followers 3K Following Exabeam is a leader in intelligence and automation that powers security operations for the world’s smartest companies.
KringleCon @KringleCon
6K Followers 59 Following The world's most fun and festive hacking challenge! 🎁 #HolidayHack by @CounterHackSec + @SANSInstitute
d4rkm4tter (Mike Spic... @d4rkm4tter
13K Followers 4K Following #WiFiCactus | #WiFiKraken | Utah | @dc801 | free range wigler (ask @lintile) | AI Cyber the Cybers | Apex Storage x21/x16 designer
Peter Wu @Lekensteyn
781 Followers 107 Following Systems Engineer 🌥 | Wireshark core developer 🦈 | Free/Libre open-source software enthusiast 🔨🐛 | @[email protected]
Bob Diachenko 🇺�... @MayhemDayOne
18K Followers 541 Following Cyber Threat Intelligence @ https://t.co/fC73RSevWP, journalist, OSINT | Responsible disclosures | Security consultancy | Contact me: [email protected]
Nia Angelina Samir @nia_angelina
780 Followers 934 Following GIAC Certified Forensic Examiner (GCFE), GIAC Certified Web Application Pen Tester (GWAPT), Microsoft Certified Solutions Associate (MCSA) and Splunk Architect
DWIH_Tokyo @DWIH_Tokyo
2K Followers 325 Following #ドイツ の #科学 #イノベーション に関する情報をお届けします。ぜひフォローして下さい!ドイツ 科学・イノベーション フォーラム東京(DWIH東京)は ドイツ学術交流会(@DAADTokyo)によって運営されています。
Kristinn Gudjonsson @el_killerdwarf
803 Followers 190 Following Probably best known for once being one of the few active volcano tamers in the Bay Area. (now I'm just one of many on my remote non-tropical volcanic island)
くまなんピーシ... @KumananPCNet
818 Followers 355 Following データ復旧サービス”Win Disk Rescue”、データ復旧ツール”PC-3000 ”、デジタル・フォレンジックサービス”WDR Forensic Solution”の運営に関連した内容やいろんな役立つ情報を発信しています。 皆から「くまなん」の愛称で呼ばれています。フォロー、リポストお気軽にどうぞ。
Al Lind @big_kiwi_al
7 Followers 31 Following
Igor Skochinsky (@Igo... @IgorSkochinsky
4K Followers 292 Following software developer at Hex-Rays*, hobby reverse engineer. Advanced cleartext hacker. 日本語おk *For Hex-Rays support/inquiries: https://t.co/rxVwo1npoQ
Safecast Japan @SafecastJapan
685 Followers 10 Following オープンデータのセンサーネットワーク。現在は放射線測定に特化中。English: @safecast
Nikolay Elenkov @kapitanpetko
2K Followers 1K Following
JPドメイン Web改... @def_jp
3K Followers 4 Following zone-h に掲載されたJPドメインの改竄情報をつぶやきます。 実際には改竄されていない場合もありますが、そのような情報を排除できるように日々努力しています。
James Tarala @isaudit
8K Followers 223 Following CyberSecurity and Audit Resources from James Tarala and Enclave Security.
SANS APAC @SANSAPAC
2K Followers 355 Following The most trusted source for cybersecurity training, certification and research. To view upcoming events and course information visit our website.
seraph @Seraph39
470 Followers 277 Following tktksec organizer, AVTOKYO Speaker, BSides Tokyo Speaker, Team pinja, SECCON, CISSP, RISS, CAIS, SANS Lethal Forensicator Coin Holder
Daniel Bohannon @danielhbohannon
18K Followers 582 Following Security Researcher @permisosecurity Previously: @Mandiant/@FireEye, @Microsoft Developer: Invoke-(Obfuscation|CradleCrafter|DOSfuscation) & Revoke-Obfuscation
Koichiro Komiyama 小... @kchr
4K Followers 1K Following Cyber security practitioner/researcher @jpcert @jpcert_en . Ph.D. (Media and Governance).
Tod Beardsley is @tod... @todb
7K Followers 1 Following Shmethical Hacker. Done here. Find me on Mastodon. Specifically: @[email protected] is my last known address. Check https://t.co/4UpC7whqD2 for other clues
OGINO Tomonori @hyperogirin
84 Followers 206 Following An infrastructur specialist(engineer) in Japan. とあるITベンダーのシステム基盤屋です。最近はセキュリティ関連に特化? CTF * Hardening * Cyber Range
HIROKI IWAI @hiropooh
1K Followers 651 Following
TakanoriNakanowatari @ope
325 Followers 391 Following 発言は個人のものであり、所属を代表しません。/ This is my account, not yours.
常盤木龍治|ト... @ryuji_tokiwagi
7K Followers 3K Following EBILAB取締役ファウンダーCTO CSO| 岡野バルブ製造取締役|うむさんラボ執行役員|eiicon地方創生アンバサダー|琉球アルファドライブCSO|おきなわC&C|ISCOフェロー|ZENTech|クアンド|Singular Perturbations |カステラ本家福砂屋|レキサス|コザ|NJZ|NEX2Y
No Starch Press @nostarch
36K Followers 3K Following The finest in geek entertainment. Email us: [email protected] We're live M-F, 7am-6pm PDT
SANS DFIR @sansforensics
109K Followers 98 Following The world's leading Digital Forensics and Incident Response provider. This feed updates you on latest DFIR news, events, and training.
Stamus Networks @StamusN
1K Followers 239 Following Enterprise Clear NDR solutions. Leader in Suricata-based network security. Creator of open-source toools GopherCAP, Suricata Language Server, Splunk app.
kayo @tshizuku03
226 Followers 241 Following 趣味と日常をつぶやきます。夢見がちなエンジニアです。データベースエンジニアからデータエンジニアにキャリアチェンジしました( ´ ▽ ` )ノ Oracle/Snowflake/terraform/AWS/ワーママ/女性エンジニア
Matt Linton @0xMatt
7K Followers 772 Following #DFIR with a lot of focus on the IR part. Cellist, NASA Alum, Parrot lover, USAR & EMS do-er. BlueSky is @amuse.bsky.social
Information is Beauti... @infobeautiful
119K Followers 456 Following Data-visualizations & infographics made by David McCandless @mccandelish - app @vizsweet - new project @beautiful__news - https://t.co/oVLj2XZ7nf
Chad Tilbury @chadtilbury
22K Followers 600 Following Digital forensics and incident response. Ex-AFOSI, Mandiant, and CrowdStrike. SANS Institute Fellow and co-author of #FOR500 and #FOR508 courses.
Janos Gyerik @janosgyerik
437 Followers 521 Following I like to code and I do it a lot. I make Android apps, build websites, and answer questions on #stackoverflow
TROOPERS Conference @WEareTROOPERS
10K Followers 501 Following We are TROOPERS - IT-Security Conference & Trainings https://t.co/gO1lSzFuns Also at the infosec exchange @WEareTROOPERS