Tags: mysqlto manipulate the MySQL database, delete a row in the table to indicate the following error: ERROR 1175 (HY000): You is using Safe update mode and you tried to update a table without a WHERE that uses a KEY col Umn error message: using the security update mode, try to update the Where condition where the table does not use the key column;The reason is: MySQL has a variable called sql_safe_updates, for the security of the database update op
)Web Scan: Nikto burpsuite owasp zap Sqlmap: For SQL injection vulnerabilitiesBursuite: Agent-truncated tool① change agent in browser, use Bursuite proxy instead② waits for Bursuite to truncate the client's request to the server in the browser, and then saves the truncated information to the local file③ using Sqlmap to see if there is a SQL injection vulnerability sqlmap-r burp (file name)--dbs5. Infiltration Attack phase: often encounter a number of protective measures, and then re-execute 2-4
Reference[1] http://netjs.blogspot.co.uk/2015/05/fail-fast-vs-fail-safe-iterator-in-java.htmlThe collections which is there from Java 1.2 (or even legacy) like ArrayList, vectors, HashSet, HashMap all has fail- Fast iterator whereas Concurrent collections added in Java 1.5 like Concurrrenthashmap, Copyonwritearraylist, copyonw Ritearrayset has Fail-Safe iterator.The key differences between the fail-fast and
website under Windows. The reason is that if you're using an installation package from apache.org, because these packages are compiled based on outdated visual Studio 6, you have to have to use the same old version of PHP (that is, the PHP version of VC6). This is also the version of PHP compiled with Visual Studio 6) in order to work with it.To use the latest version of PHP, you should follow the official PHP recommendations. The official PHP recommendation is that you can use IIS under Window
I don't know how to break word Safe Mode when I open a Word document, I have a mcrosoft office encounter problem, I need to turn off the prompts, and it shows that word failed to start in safe mode.
Word does not open, display the above dialog box, after clicking the "Do Not send" button will be closed. Run word again and ask if you want to start Word in safe mo
Win7 How to use Safe Mode to repair computer system
Click to turn off the computer and reboot.
When an interface similar to the following figure appears, click F2.
Select Safe Mode to start.
After a successful login in Safe mode, you can restart the computer by clicking the shutdown.
Next, we will introduce a w
When the Win7 system fails and the operation is not repaired in normal mode, usually we will press the F8 key on the boot, and then choose "Safe Mode" in the Advanced Boot menu, Safe mode is a similar pure system for us to diagnose the problem, but some users can not enter the Safe mode after F8. , so how do we deal with it?
This type of failure is most likely t
3389, but there is no Terminal Services in the 2000pro.
8.4899 of the precautions??
There are many intrusion methods on 3389 and 4899 on the network. 4899 is actually a remote control software opened the service port, because these control software powerful, so often hackers used to control their own chickens, and such software generally will not be anti-virus software killing, than the back door is also safe.
4899 is not like 3389, is the syste
The Java class library contains a number of useful "base module" classes. In general, we should prefer to reuse these existing classes instead of creating new ones. : Reuse can reduce development effort, develop risk (because existing classes are already tested), and maintenance costs. Sometimes, a thread-safe class can support all the operations we need, but more often, the existing class can only support most operations, and a new operation needs to
A non-thread-safe problem exists in an instance variable, and if it is a private variable inside a method, there is no non-thread-safe problem, so it is thread-safe.Test1 PackageCom.cky.bean;2 3 /**4 * Created by Chenkaiyang on 2017/12/4.5 */6 Public classSelfprivatenum {7 8 Public voidAddi (String usrname) {9 Try {Ten intNum =0; One if(Usrname.equals ("a")) { ANum =1
Win7 security mode and XP are the same, in Safe mode we can delete stubborn files, killing virus, unlock Group Policy, uninstall incorrect drive, so for many computer enthusiasts friends are more practical. However, we found that there are still a lot of small white friends do not know how to enter the Safe mode of Win7, its operation is similar to XP, the following Pepsi net small series to share with you
The following 10 suggestions are provided by Trend Micro for how to maintain secure Internet access in 2014. You can collect them as a reference for safe Internet access.
1-install or maintain a set of robust security software for your computer and mobile devices, which can be updated on a regular basis and not only provide anti-virus protection.
2-if you use a credit card, pay attention to your monthly bill. If there is any fraudulent consumption, c
in the IE Address Bar and press Enter. Think about what will happen? Maybe you guessed it. Yes, at this time, IE cannot take you to the real IP address corresponding to this domain name. Instead, it will take you to the IP address 127.0.0.1, that is to say, you have turned to a circle and ran back, do you know? In this case, will the website be blocked?
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Is it safe to connect without USB flash drives? Hackers can use sonic to attack your hard disk and sonic
Is it safe to connect without USB flash drives? Hackers can use acoustic waves to attack your hard disk. Attackers can use acoustic waves to interfere with the normal working mode of HDD to generate a temporary or permanent DoS Status ), this attack can be used to prevent CCTV monitoring systems from rec
(1) Open phpinfo (); The following prompt appears in the date location:Warning: Phpinfo (): It is not safe for rely on the system ' s timezone settings. You is *required* to use the Date.timezone setting or the Date_default_timezone_set () function. In case you used any of those methods and you is still getting this warning, your most likely misspelled the timezone Iden Tifier. We selected the timezone ' UTC ' for now, but please set Date.timezone to
As in the title, if I were to answer before, I would say, yes, in the multi-threaded environment to operate the vector, do not need to add synchronized.But I accidentally saw an article today, I found that my previous idea was wrong, the address of this article:http://zhangbq168.blog.163.com/blog/static/2373530520082332459511/I extract the key part:Vectors are slower than ArrayList because the vectors themselves are synchronized, and ArrayList is notTherefore, no synchronization is involved with
Making a thread-safe or synchronized collection
As you know by now, the commonly used collection classes, such as Java. util. arraylist, are not synchronized. however, if there's a chance that two threads cocould be altering a collection concurrently, you can generate a synchronized collection from it using the synchronizedcollection () method. similar to the read-only methods, the thread-safe APIs let you
Http://acm.hdu.edu.cn/showproblem.php? PID = 1, 2527
Create a user-defined tree and return the WPL value.Safe or unsafe
Time Limit: 2000/1000 MS (Java/others) memory limit: 32768/32768 K (Java/others) total submission (s): 1511 accepted submission (s): 594Problem descriptionjavac ++ saw an interesting thing while reading books on the computer one day! Each string of characters can be encoded into numbers to store information, but the storage space obtained by different encoding methods is differ
Cross-platform thread-safe localtime and gmtime
(Jinqing's column)
Localtime () returns an internal static variable pointer, Which is thread insecure.Localtime_r () is a thread-safe version, but not on Windows.
Boost: date_time: c_time provides a unified version for the ctime functions localtime and gmtime.It is defined as two static member functions in c_time.
Header file: c_time.hppNamespace: boost:
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