John Opdenakker

@j_opdenakker

Ethical hacker | Blogger | Security awareness | | | online privacy | Sports: cycling, running,... | a good pint of beer & other random stuff

Belgium
Joined June 2011

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  1. Pinned Tweet
    24 Sep 2018

    Some people asked me about learning resources. I did a write-up about the resources I use and what works for me. Have a read and please share your learning resources via comments or here on twitter.

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  2. 2 hours ago

    Lol, I had to take 3 separate screenshots of the potential vulnerabilities

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  3. 2 hours ago

    Hospital security. I kid you not...

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  4. 3 hours ago

    Marriott didn't take your security seriously! 5 million stolen passport numbers unencrypted and 8.6 million unique payment card numbers, of which 354,000 cards were active and unexpired at the time of the breach in September

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  5. Retweeted
    4 hours ago
    Replying to
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  6. 4 hours ago

    Proofpoint researchers discover template that uses fake fonts to decode content and evade detection. At least active since may 2018.

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  7. 6 hours ago

    Singapore Airlines suffered a data breach. Poor (or actually no) handling of the incident.

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  8. Retweeted
    7 hours ago

    That’s a very candid breach disclosure - “Your personal data stored with us is not safe”

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  9. 9 hours ago

    Mind & Motion suffered ransomware attack on september 30th 2018. Although the data breach notice is from end November, I didn't see this pop up before. Or I forgot about it because it's almost literally daily news...

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  10. 12 hours ago

    <sarcasm> I should start my own (security) news site and just copy the content of a research blog or other site, change a few words and the article is ready. </sarcasm> Gives me only more respect for good journos/writers like , ,,,...

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  11. Retweeted
    22 hours ago

    Researcher pulls Black hat Asia talk on hacking apple's saying he was only able to reproduce hacks on iPhone X under certain conditions, but it did not work with iPhone XS and XS Max. Good PR for Apple, shitty PR for his company.

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  13. 22 hours ago

    Researcher pulls Black hat Asia talk on hacking apple's saying he was only able to reproduce hacks on iPhone X under certain conditions, but it did not work with iPhone XS and XS Max. Good PR for Apple, shitty PR for his company.

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  14. Retweeted
    Jan 3

    Personal data (phone Numbers, address info, chats, account or credit card info,...) of hundreds of German politicians hacked and leaked via twitter.

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  15. Retweeted
    Jan 4
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  16. Retweeted
    Jan 4
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  17. Retweeted
    Jan 4

    What is the coolest tech gift you saw this holiday season — or were lucky enough to receive?

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  19. Jan 4
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  20. Retweeted
    Jan 3

    Do I have any Infosec peeps interested in c#/.net or .net developers interested in security following me? I'd like to share something with you and get some feedback

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  21. Jan 3

    Personal data (phone Numbers, address info, chats, account or credit card info,...) of hundreds of German politicians hacked and leaked via twitter.

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