Https. Hardening. Secure Linux containers cookbook. Strengthen lightweight containers with SELinux and Smack Serge HallynPublished on February 03, 2009 A common response when someone first hears about containers is "How do I create a secure container? " This article answers that question by showing you how to use Linux Security Modules (LSM) to improve the security of containers. In particular, it shows you how to specify a security goal and meet it with both the Smack and SELinux security modules. For background reading on Linux Containers, see "LXC: Linux container tools" (developerWorks, February 2009). Linux containers are really a conceptual artifice built atop several Linux technologies: Resource namespaces allow the manipulation of lookups of processes, files, SYSV IPC resources, network interfaces, and more, all inside of containers.Control groups allow resource limits to be placed on containers.Capability bounding sets limit the privilege available to containers.
Major player 1: LSM Major player 2: SELinux Major player 3: Smack. Meet skipfish, our automated web security scanner. Mashup security. Mashups are applications and Web pages built using an aggregation of UI artifacts and data from diverse and often public sources. A mashup development model introduces an open development model along with many new security risks.
These new risks bring security to the forefront when developing a mashup application. Traditional security measures such as DMZs and firewalls fall short when addressing the fine-grained access required for mashup UI artifacts and data. A mashup application or page must address such issues as cross-site request forgery (CSRF), Asynchronous JavaScript™ + XML (Ajax) vulnerabilities, cross-site scripting (XSS), and other potential security weaknesses. This article explores security issues that you should address when building mashup applications and pages. The need for mashup security Mashup pages or applications are built using data and UI artifacts combined from one or more internal and external sites, typically in an ad hoc manner. User input security Listing 1. Securing PHP Applications Part II – Securing PHP code | PHP Code. 5. SQL injectionsWhat is it? This type of attack is one of the most common attacks.
SQL injections occur after two failures of the part of developers: failure to filter data as it enters the application (filter input) and failure to escape data as it is sent to the database (escape output). For example, let’s suppose we have the following query: If this query is sent to MySQL the following error is displayed: You have an error in your SQL syntax. Now, the user finds out information about two columns of your database table and knows which is your full WHERE clause.
If he knows a user or many is even easier. How should I protect my application from it? 6. For example, this type of attack can come from a link like this: <a href= A user clicks on this link and goes to your site. How should I protect my application from it? 6.2. How should I protect my application from it? - IP addres verification This is very similar to user agent verification. 6.3. 7. 8. 9.
<? Website Security Tips for SEO. A hacked website can seriously affect your search engine optimization efforts. This article will explain the three ways it can hurt you, the major forms of attack, what makes a site vulnerable to them, and what you can do to protect your site from hackers. A hacked website’s impact on SEO can be separated into three major categories: Effect on search engine ranking. Major search engines like Google will penalize your website as an ”attacked” site or site hosting malware, and then your rankings will be dropped until the website has fully recovered from the attack.
This loss of rankings will of course affect website traffic, which your website needs in order to produce sales and profit. Effect on customer quality experience and security. Examples of this information include user passwords, Social Security numbers, credit card information, etc. Effect on trust. Source: The Web Hacking Incident Database 2009 The primary causes of SQL injection include the following: or die(mysql_error()); Step 1. Web application security: Testing for vulnerabilities. As the Web grows increasingly social in nature, inversely, it becomes less secure. In fact, the Web Application Security Consortium (WASC) estimated in early 2009 that 87% of all Web sites were vulnerable to attack (see Resources for links to more information).
Although some companies can afford to hire outside security analysts to test for exploits, not everyone has the resources to spend US$20,000 to US$40,000 for an outside security audit. Instead, organizations become reliant on their own developers to understand these threats and make sure their code is devoid of any such vulnerability. To write secure code, you must first understand the threats to which your work is exposed.
This article looks at some of the more popular vulnerabilities, such as cross-site scripting and SQL injections, and introduces tools you can use to help safeguard not only your sites, but the data and networks that power them. Common vulnerabilities Back to top WebScarab Figure 1. Figure 2. Figure 3. Figure 4. Anatomy of a Web attack. Of the applications, Web sites, and services hosted on the Web, more than a fair share will experience some sort of mischief at the hands of a hacker intent on carrying out some sort of attack. To keep things short and sweet, I can easily say that although "The Truth may not be out there," people looking to deface, crack, exploit, break, steal, or otherwise mess with your site and application are.
Unfortunately, an increasingly sophisticated and hostile environment exists in today's Internet. In the case of those looking to harm your application, you have several things to consider. Basically, attackers have a lot of advantages that you as a defender don't. For example, attackers have a whole underground dedicated to sharing information as well as a (un)healthy desire to team up and create all sorts of havoc.
Accentuating the threat is the fact that those wishing to "have a little fun" with your application have nearly limitless time, money, and resources. Back to top The attacks Content.