![]() It will modify this element inline, and inject a script element: Contact me If cloudflare detects an email address in an tag, for example: Contact me This has multiple parts to it, but the one I was most interested in was email obfuscation.Ĭloudflare's email obfuscation works by modifying the HTML output of your app when they serve it. One of the features of Cloudflare is Scrape Shield. ![]() At the same time, I also removed the Cloudflare caching layer, as Netlify uses its own layer of caching. Some time ago I moved my blog from a self-hosted instance of Ghost to Netlify. Somewhat surprisingly perhaps, I don't get a huge amount of spam because of it. I've personally only ever had pleasant emails from people (though I'm well aware that's a rarity for many people in our industry). I include my email address on the about page of my blog in case people want to get in touch. It's obfuscation, not encryption! Background - Cloudflare Scrape Shield It's only meant to provide rudimentary protection against automated scraping by bots. It's important to note that the encoding scheme used here is incredibly weak. It uses a similar approach as Cloudflare Scrape Shield. Import b.In this post I show a simple way to obfuscate email addresses to make it harder for bots to scrape them from your site. Let’s obfuscate the simple code shown below using an obfuscation tool. The following are some of the most popular Java obfuscator tools. Decompilers are available for Java which can easily reverse-engineer the compiled Java byte-code. Java, just like any other programming language, is prone to reverse-engineering attacks. Decryption can be performed when the code needs to be executed. Encryption: Encryption of data(like strings) prevents the hacker from understanding the true meaning of the code.The attacker will have to begin from scratch on the new code. Regularly altering the obfuscated code: if we regularly update the obfuscated code, then all the progress of the hacker on the previous code will be lost.This will make the code difficult to reverse-engineer. ![]() Using Dummy Code: some tools will often include fake code which has nothing to do with the original logic.This will make the code perform the same task but becomes difficult to follow. Changing the Control Flow: obfuscation tools will often change the control flow of the code.Renaming Variables and Method Names: renaming variables and methods into some difficult-to-read names or using unprintable or invisible characters is a commonly used obfuscation technique.Let’s discuss a few of the most common code obfuscation techniques. In a nutshell, obfuscation uses redundant logic and adds unwanted code to astray the reader or a reverse-engineering tool(like a decompiler). Code Obfuscation TechniquesĪ lot of code obfuscation tools exist, and they use a variety of techniques to prevent attacks. Hackers and attackers also use obfuscation to prevent antivirus tools from detecting their hostile code.Preventing reverse-engineering of our code is one of the major use cases of obfuscation. These malicious users may try to reverse-engineer our code and take advantage of some shortcomings of our code. ![]()
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