PDFill PDF editor is commercial software, which comes with free tools that can be used for splitting and merging PDF files.

Stealth – Viruses can intercept the request by antivirus program to read files and then return uninfected clean file thereby fooling an antivirus program.

Self-modification – Antivirus software use know virus definitions to look for virus signatures (digitally identifiable virus information). However, some viruses can modify itself each time they copy therefore have a different variant, which can not be easily identified using virus signatures.

Encryption – Viruses can have varying encrypted module with a small decrypting module. That would make it difficult to identify viruses using known virus signatures.

Polymorphic technique – Polymorphic virus is similar to Encrypted virus. The difference is that in this case decrypted module also changes with every copy therefore make it even more difficult to identify virus using signatures.

Metamorphic technique – These viruses can write themselves completely making it extremely difficult to study the pattern.

Avoiding Bait files – Antivirus software sometimes creates bait files to invite viruses to infect these files. As viruses learn about such files they avoid infecting such files and other files that might be easily caught by anti-viruses.

Good antivirus software continue to research new threats and ways to combat them but there are times when virus authors can use a new and advanced technique before anti virus technology catches up. It is always advisable to use caution.

The user interface is very simple and intuitive. It generates a report and also shows linked from pages. You can follow these pages to fix broken links. You can press Ctrl+R to recheck broken links. This will remove any false warnings. The tool also supports SSL website.

• Simple and easy to use.
• Provides with just critical and useful stats about the site.
• Updates the stats every 3 minutes.
• Processing and collection of stats is done on Automattic server, so doesn’t create load on your web host.

The plugin can be used for daily quick analysis along with other extensive analytics tool (such as Google Analytics) for periodic, less frequent and more in depth analysis.

There are other features that can simplify editing code. You can edit multiple files at one time. Notepad++ can open multiple files in tabs. You can open two files in two views. This can help while comparing and editing files. Search and replace functionality is supported. You can also bookmark any document. The text editor also suggests auto completion as you type.

With the help of this plugin, Blog can be upgraded in minutes. Simply, follow the step by step process. You need to be running at least WordPress 1.5 to use the plugin for upgrade.

The only ways, to reduce chances of being attacked by Zero day exploits, are to follow security best practices, keep Security software and OS updated, and use caution while opening attachment, downloading files and installing software.

There are many other features. You can preview theme before applying, check word count, add image captions etc. Check the release and short video for Wordpess 2.6.

Until the bug is fixed, avoid opening the post or page (with iFrame code) in Visual mode and open it in HTML mode. If the iFrame code is disappeared put it back and save the page again in HTML mode.

Worm versus Virus

• Worm is different than Virus. Virus need to attach itself to an existing program which is not the case with Worm. Worms are independent program.
• Worm tends to harm the network by copying itself to multiple locations and using bandwidth and network resources whereas Virus harms computer by corrupting and modifying files.
• Worms spread much faster than virus.