how to avoid keyloggers

It's not uncommon for many users to accidentally delete important files in a computer, believe that anyone is wrong to delete, misoperation, and how to avoid the deletion of important documents is a lot of us are thinking of a problem, usually in order to avoid mistakenly delete files, most of us will take the form of file backup, To even create a backup of important files, but sometimes is not a condition

Today, advertising hanging horse, window ads has not been a new phenomenon, especially the rampant proliferation of some bad websites, greatly increased the chance of computer-infected Trojan virus. Moreover, this kind of website has the serious website to hang the horse behavior, but hangs the horse website mainly to deceive the visitor to use each kind of name, each kind of gimmick listing lures the user to let its "The Recruit", from seeking the benefit. This not only lets the victim suffer f

u disk to buy small, but it is very necessary. Here is a simple talk about the purchase of U disk to avoid shanzhai goods to master some of the skills. Buy u disk, the price is our most intuitive first judgment basis. U disk Although a wide range, but because of its simple structure, so the price category is better estimated. Even if you do not understand the U disk, as long as the Internet to check, the natural heart has a base. When we met the pric

As long as you use the computer, the computer's crash problem is always with you, which may be one of the most frequently encountered problems in the process of using your computer. And the cause of the crash is confusing, it is difficult to fathom. In fact, the normal condition of the crash can be avoided. The following crash root hints, may let you avoid it, enjoy being a computer fan. 1. Installing too many operating systems on the same hard drive

The writer is a programmer with years of experience in Java development, and from experience, not all of the Java SE feature/api are worth the programmer to use, such as the 6 listed in this article, we have to be cautious before using. The following is the selected passage of the original text.Years of Java development experience tells me that in the long run, the following Java SE features/API, developers are best to stop using. Reflection Bytecode manipulation Threadlocals

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the Java language has undergone profound changes.In the first time here translated into Chinese version. For everyone to learn to share. 8. Avoid using

Many people think that the eval () method is evil (evil). This method can be used to execute arbitrary strings as JavaScript code. We should not use the Eval () method as much as possible. For example, you can use square brackets to get the value of an object property:Antipatternvar property = "Name", Alert (eval ("obj." + property);//Preferredvar property = "name"; alert (Obj[property) );In addition, JavaScript's setinterval () and settimeout () methods have similar problems. You should also

How to avoid website down rightSEO Learning Notes Summary:site down right is usually caused by a variety of factors, optimization of keyword rankings, how to avoid the site down the right, when the right to fall, we have to adopt what mode of operation, faster recovery of keyword rankings. Resolve how to quickly resolve the site down the right, how to snap to restore keyword rankings. no ranking refers to t

for this class. This would shake the whole foundation and cause confusion. There is no way in Java to block a class from implementing an interface. In another way, we can set the class to final so that it cannot be extended. Even, we can set the constructor to private to prevent the class from being instantiated so that it never breaks the convention. In addition, if a particular constant is used more than once in the same class, the developer can use static introductions. All for constant cl

As we all know, in the jquery syntax, the $ symbol is shorthand for jquery. In some cases, however, you might want to introduce additional JavaScript libraries (such as prototype) on the same page. Because of the short convenience, many libraries also use the $ symbol. To avoid name collisions, jquery provides a noconflict () method to solve this problem. Calling this method gives control of the $ identifier to other libraries. General mode: //1

PHP keyword Replacement class (avoid duplicate substitution, preserve and restore original link) The main contents of this section: A keyword Replacement class Can be used mainly for keyword filtering, or keyword search substitution. Implementation Process Analysis: Keyword replacement, in fact, is a str_replace () process, if it is pure str_replace face 10W keywords, 1W Word article also only need about 2 seconds. The problem lies in: Keywords

Avoid complicated get/set operations excerpted from: Xia Xin hibernate_dev_guide To avoid complicated get/set operations, you can use the Apache Jakarta Commons Group The attribute bulk copy function (http://jakarta.apache.org/commons/beanutils/) provided by the piece. In the following example, we copy all the properties of the user object to the Anotheruser object: TUser user = new TUser (); TUser another

kung Fu, seriously understand what content can attract people's attention, and in the site constantly add new columns, finally, do not know where their focus, the theme of the site is increasingly unclear .... The development of the Internet today, should say that all aspects of content, if your site does not have enough characteristics and enough professional, then even if the information is large, for the browser is also a duplication of spam information, there is no special value to say. pri

, more strangely, Many of the stations ' snapshots are updated at 28, number 29th. Baidu every update, will bring a lot of new problems, this is the webmaster recently in the site optimization process of an assessment. Why is the rank promoted? Why the home page down right? Why aren't snapshots updated? And so on, it takes a lot of thought and time to analyze. 　　 (Can you see the meaning of this diagram?) Luoping in the Baidu update of the station group optimization summary, effect

URL path is the address of the site page, usually, a page only exists a valid address, so that the page is unique, but also for the search guide to judge the entrance of the page has provided help. But some programs themselves have dynamic, static, pseudo static. At the beginning of the website optimization, the webmaster can not first determine their own site to use which mode to do, with the dynamic, and then changed to pseudo Static, and then changed to static. Then the site page will certain

, the query execution time is too long. Some queries can take a long time to consume. If the query statement design is unreasonable or query design to the table and records for a long time, will make the query more lengthy execution. If there are times when a user needs to update or delete a record, a lot of locks will be acquired if the rows involved are more numerous. These locks block other queries, whether or not they are eventually upgraded to table locks. In general, do not mix long runn

Anatomy of SQL Server sixth to avoid regressions in system tests for Orcamdfhttp://improve.dk/avoiding-regressions-in-orcamdf-by-system-testing/The risk of bugs is increasing as I continue to add new features and new data structures to support the Orcamdf softwareEspecially when I develop a large unknown function, I can't estimate the structure and the structure of the association, in order to reduce the risk, testing is very necessaryUnit TestUnit te

to stop shipping and contact the buyer at the first time. If it has been shipped, and the goods can not be intercepted, sellers need to contact the buyer do not sign, to avoid the purchase of goods received and the risk of being signed. If the buyer is a long-term and trustworthy user, the seller may negotiate with him to return the payment because some of the issues in his PayPal account have been investigated and recovered. If PayPal verifies that

Environment: Windows 7+wamp server+mysql 5.7.9View MySQL default encoding: like ' character% ' Character_set_client is the client-side encoding method Character_set_connection the encoding used to establish the connection Encoding of the Character_set_database database Character_set_results encoding of the result set Encoding of the Character_set_server database server As long as the guarantee system adopts the same encoding method, it can

It is important to avoid potential data type conversions as much as possible.If you compare character data with numeric data, Oracle automatically converts the character type with the To_number () function, which results in a full table scan.Example 2: Column col1 in table Tab1 is a character type (char), the following statement has a type conversion:Should be written as:Oracle Performance optimization Operation two: