偏執還是準備好? 你桌上的間諜
我通常會收到有關為什麼我在筆記型電腦和手機的環境光感應器上貼貼紙的問題. 有人認為我分不清光感應器和攝像頭，並企圖向我解釋這不是攝像頭. 他們不知道的是環境光感應器可以…
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古代世界最大的安全失敗: 從法老谷學到的安全教訓
多虧了萬事達卡的長期年假 (我們有 25 天!) I took a two week trip to Egypt earlier this month to visit a place I have always wanted to see: the burial tombs of the ancient pharaohs in the Valley of the Kings. As a security engineer, I could not help looking at these…
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如何獲得入門級網絡安全職位
This post is a response to a friend who is seeking a cybersecurity role in an extremely challenging market. Given that this is a widespread issue these days, I decided to write a post rather than simply leaving a comment. Various statistics from multiple sources suggest that there is a wide gap in cybersecurity roles,…
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水坑攻擊: APT 和網絡罪犯如何滲透安全基礎設施
My first encounter with the world of cyber-criminals occurred through a watering hole attack campaign many years ago. I visited a Persian website and discovered that it was downloading malware onto visitors’ browsers. I promptly contacted the site administrator, who informed me that they had no technical knowledge of the issue. It became apparent that…
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憑證填充不是 DDoS!
I have heard this many times over the course of the last several years: someone is experiencing a heavy DDoS attack on their website. When I ask them what type of attack they are experiencing, the answer is usually that the bad guys are sending them thousands or even millions of POST requests. When I…
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Application layer DDoS attacks, and how they can be mitigated
DDoS (distributed denial of service) and DoS (denial of service) attacks can be broadly classified into three categories based on the layers of the OSI model they target: network layer (Layer 3), transport layer (Layer 4), and application layer (Layer 7). Layer 3 and Layer 4 attacks are typically less complex–even though that they might…
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The WAF is dead, long live the WAF!
The web application firewall (WAF) is a security tool used to guard against unwanted access to web applications. It is often a security device that sits on top of a web server and guards against threats from the internet or from beyond the network perimeter. Unlike Layer 3 (Network) and Layer 4 (Transport) firewalls, which…
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How to deal with new tracking techniques; Zombie cookies and Canvas fingerprinting
Canvas fingerprinting, and Zombie cookie trackers are nothing new; however, these methods are improved and have become notoriously effective over the time. Recently, a study revealed that one in every four 10,000 most visited websites on the internet uses canvas fingerprinting to track the visitors with up to 99.9% accuracy. The tracking attempt to collect…
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苏霍辛嘅末日; 下一步係乜嘢?
好多年了, 我熱心地使用Suhosin與Apache2或 PHP-FPM Nginx Web服務器嘅任何 PHP5實現，以抵禦SQL注入同其他常見嘅Web攻擊. 講真., Php5係如此災難性, 在其核心安全性方面, 和它的功能和糢塊，我不可能設想使用它…
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