If I know how long a page is, I can decide in advance whether I'll read it. I use it to show clients how big or small webpages are on various devices. Here's another tool I use to remove all images and gists from programmer blog posts to get only the highlights I also bookmark them; I'm not endorsing skimming as an alternative to reading. You'll notice that most of this code is not complicated; in fact, some of it is downright simple.
Because these are primarily for my own personal use, simple is fine. If I were to put these in a gist, others could fork and update them and we might have better bookmarklets. Most of us who are not web designers don't want the hassle of multiple browsers. We also don't want our links cluttered with snippets of JavaScript. To be clear, I'm not talking about writing your own add-ons, but using existing ones to enhance your web experience. When I first started using Reddit and Imgur , I found their gallery editing difficult.
I could have stopped using the tools, but then I'd need to find another online service and upload my media. Also, I might forget and come back to Imgur and be unable to navigate my own content. My solution was to play around in the console and page inspector to see if I could get what I wanted on their service. Right-click, then left-click "Inspect Element" for an instant look at the structure of a web page. After about five minutes, I noticed tiny differences between large images and small thumbnails.
I needed bigger images so I could see what I was dragging and establish some narrative order. The code I came up with was relatively simple, with only seven lines. The point wasn't to write the least amount of code, or even the cleanest code, but to simply complete the task: Fire and forget!
First I told the web page to remove height and width constraints, then to loop through each sortable image and replace part of the filename. It's not the cleanest code; it relies on Imgur's DOM structure remaining unchanged and having the jQuery library, but the idea is to get what you need so you can continue.
And it's a lot more efficient than emailing the dev team with petulant requests to change everyone's experience because you find it difficult to use. I use an add-on for this, and as far as I know, it's not strictly OpenSource although you do have access to the code if you can find the Chromium user-profile folder [ User JavaScript and CSS ]. Note that Imgur no longer uses the same DOM, so the code above doesn't work anymore. That is true and will remain so, for much of the code you publish in this way.
It's not designed to build an empire, just to take some monotony out of your day. The final topic I want to address is how to create your own add-ons. I'll focus on Chromium add-ons since I have the most experience with these, but you can find links for Firefox and likely other supporting browsers on the web. You might also want to do ambitious things like adding keyboard shortcuts to all pages with previous-next links or block out specific hate speech on the web.
Poorly written code for web applications can be exploited to gain unauthorized access to sensitive data and web servers. In this tutorial you will learn how to hack websites, and we will introduce you to web application hacking techniques and the counter measures you can put in place to protect against such attacks. A web application aka website is an application based on the client-server model. The server provides the database access and the business logic.
It is hosted on a web server. The client application runs on the client web browser. Web applications are usually written in languages such as Java, C , and VB. Most web applications are hosted on public servers accessible via the Internet. This makes them vulnerable to attacks due to easy accessibility. The following are common web application threats.
In this website hacking practical scenario, we are going to hijack the user session of the web application located at www. One solution is to rename the file while uploading to guarantee about the file extension or alter the file permission, like chmod to stop the execution of the file. That means, the most acclaimed option is to stop the direct access of the uploaded files altogether. In this way, the number of files that are uploaded on your website will be stored in a folder which can be accessed outside the webroot or in a database as a blob.
When your files are not accessible, you need to write a script that will fetch all the files from a private folder and send you to the browser. Along with that, remember the image tags support an src attribute which is not a direct URL to an image, that means the src attribute can address to your file delivery script enabling you to set the required content type in the HTTP header.
For instance:. Usually, the hosting service providers help you with the server configuration, but in case you are managing the hosting for your own website on your own server, you need to ensure the following things. Moreover, remember to restrict the physical access of your server. Security threats are now more sophisticated than ever before. Naturally, you cannot just depend on outdated security practices. If you want to prevent your PHP website from hacking, have a comprehensive strategy with all the best practices and principles as explained above.
Do you want to hire PHP developers with proven expertise on the above-mentioned security practices and tools? CMARIX as one of the leading web development services can take care of all your potential web security concerns. A blend of true Engineer and…. PHP Frameworks. Cmarix Blog. Keep Software Up To Date This may look like a preposterous advice but considering the importance of using updated software for security reasons it deserves a mention here.
Check Session In Every Protected Page Checking the sessions of the user is another crucial security task to prevent threats. Always Use. Input Validation source:dribbble. Check Your Passwords source:dribbble. The standard practice is to use at least 8 character passwords that include a number and a mix of upper and lower case letters. Passwords can be more protected by storing the same as encrypted values.
Use some quality hashing algorithms for this. In case your password for admin area is still being accessed or guessed, use hashed passwords as they cannot be decrypted. Use The Following Security Tools When you finally consider having done everything to boost your website security by following the above-mentioned practices and principles, it is time to test your website security. OpenVAS is a free and open source security testing tool with many advanced features. It is equipped with a large number of XSS attack examples.
Stay Away From File Uploads Security breaches are way common today and permitting users to upload files is another harmful endeavor for your website security. Make sure your server has a firewall setup and has the capability to block all non-essential ports Set up a DMZ Demilitarised Zone that enables access to port 80 and from the outside the world.
If possible you adopt different server for database and website.
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