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Basic chapter: the definition and history of mobile phone virus

Mobile phone virus is a computer virus that attacks mobile phones. It takes the mobile phone as the infected object, takes the mobile phone network and computer network as the platform, and attacks the mobile phone through virus short messages, which leads to the abnormality of the mobile phone.

Like other computer viruses (programs), mobile phone viruses are also computer programs, which are contagious and destructive. Mobile phone viruses can be spread by sending SMS, MMS, email, browsing websites, downloading ringtones, etc. Cell phone virus may cause the user's cell phone to crash, shut down, delete data, send out spam, make phone calls, etc. , even damage the hardware such as SIM card and chip.

The earliest mobile phone virus appeared in 2000. At that time, the mobile phone company Movistar received a large number of harassing text messages called "Timofonica" sent by computers. The virus sends spam messages such as swearing to users in the mobile system of Telefonica, a Spanish telecommunications company. In fact, the virus can only be regarded as a text message bomb at most. The real mobile phone virus didn't appear until June 2004, that is, the "Cabir" worm virus, which was copied by Nokia 60 series mobile phones, and then kept looking for mobile phones with Bluetooth installed. Then the mobile phone virus began to spread.

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First, the types of mobile phone viruses

Mobile phone viruses can be divided into four categories according to virus forms:

1. Viruses "kabir" and "Lascaux". A "transmission via Bluetooth device, no red transmission. Cabir is a network worm that can infect mobile phones running Symbian operating system. After the virus is found in the mobile phone, it will use the Bluetooth wireless function to scan other mobile phones with loopholes nearby. When a vulnerable mobile phone is found, the virus will copy itself and send it to the mobile phone. Lasko Like a worm, the virus spreads wirelessly to other mobile phones via Bluetooth. When the user clicks on the virus file, the virus is activated immediately.

2. Mobile phone virus "Mosquito Trojan" of mobile communication provider. Tips: The virus is hidden in the cracked version of the mobile game Mosquito. Although this virus will not steal or destroy users' data, it will automatically dial and send a large number of short messages to numbers located in the UK, resulting in a sharp increase in users' information fees.

3. The virus "mobile phone hacker" to deal with mobile phone bugs. Tips: Hack.mobile.smsdos virus is spread by SMS with virus program. As long as the user views the short message with virus, the mobile phone will automatically turn off immediately.

4. "mobile phone. SMSDOS virus, which attacks by SMS or MMS, is a typical example of mobile phone virus. Aiming at the "SMSDOS" virus appearing in Siemens mobile phones.

"Mobile phone virus. SMSDOS "can be spread by SMS or MMS, resulting in errors in the internal programs of the mobile phone, which leads to the failure of the mobile phone to work normally. Common Mobile Phone Viruses and Their Poisoning Symptoms Virus Name Mobile Phone Poisoning Symptoms EPOC _ Alarm The mobile phone keeps giving out alarm sounds. EPOC BANDINFO。 A change the user information to "someone's book". EPOC _ fake.a displays pictures when the built-in hard disk is formatted on the mobile phone screen, which is a scary move. EPOC ghost is not real. A display "Everyonehatetsyou" on the screen. Light of EPOC. A keep the background light flashing. EPOC is alone. This is a kind of malignant viruses, which will invalidate key operations. Timofonica sends toxic emails to mailboxes in the address book, and can also send a large number of short messages to mobile phones through a short message server. Hack.mobile.smsdos will cause the phone to crash or shut down automatically. Unavailaifabie When there is an incoming call, the words "Unavailaifabie" or some strange characters will be displayed on the screen. If you pick up the phone at this time, you will catch a virus and lose all the information in your mobile phone. Trojan horse malicious virus, when the virus breaks out, it will use the address book to make phone calls or send emails. Even called the police.

Second, the harm of mobile phone virus:

1. User information stolen. Nowadays, more and more mobile phone users store personal information on their mobile phones, such as personal address book, personal information, schedule, various network accounts, bank accounts, passwords and so on. These important materials will inevitably attract the "covet" of some people with ulterior motives, who will write various viruses to invade mobile phones and steal important information from users.

2. Disseminating illegal information. Nowadays, MMS is very popular, which facilitates the spread of pornographic and illegal pictures, sounds and movies.

3. Destroying the software and hardware of mobile phones The most common harm of mobile phone viruses is to destroy the software and hardware of mobile phones, so that mobile phones cannot work normally.

4. Causing communication network paralysis If the virus infects the mobile phone, it will force the mobile phone to continuously send junk information to the communication network where it is located, which will inevitably lead to information congestion in the communication network. These spam messages will eventually paralyze the local mobile communication network.

Actual combat article

First, the removal of mobile phone viruses

At present, the best way to remove mobile phone virus is to delete short messages with virus. If you find that your mobile phone is infected with a virus, you should turn it off immediately. If it crashes, you can take off the battery, and then take out the SIM card and plug it into another model of mobile phone (the brand of mobile phone is better to be different). After deleting the suspicious SMS stored in the SIM card, insert the card back into the original mobile phone. If it still doesn't work, you can contact the mobile phone service provider to disinfect the mobile phone through the wireless website or through the IC access port or infrared transmission interface of the mobile phone.

Second, the prevention and solution of mobile phone virus

In the face of viruses, we can only say "beware of unburned viruses" and try not to let mobile phones be infected with viruses. Mobile phones don't have as many excellent and perfect antivirus software as computers, and the system is not very mature. Once infected with the virus, users' information, materials and data are likely to disappear immediately. According to users' modes of communication, we summarized the following preventive measures and solutions:

First: Be careful when surfing the Internet on your mobile phone.

With China Mobile vigorously promoting GPRS, mobile Internet access has become a fashionable term. Besides watching news, you can also download games, ringtones and pictures, which provides a good channel for the spread of some viruses. They may be hidden in the game, start the virus at the same time when running the game (the "mosquito" incident is a good lesson), or they may be downloaded and executed with the ringtone. So try not to log in to those unknown WAP stations.

Second: Pay attention to turning off Bluetooth.

Cabir and its variants make all mobile phone users break into a cold sweat. As the biggest mobile phone virus, Cabir has entered more than 20 countries around the world, including the United States, China and Russian. This little bug is really not simple. It can spread all over the world just by Bluetooth. So we'd better turn off Bluetooth at ordinary times, and don't easily accept Bluetooth messages from strangers in public.

Third: Don't open unfamiliar MMS.

The popularity of MMS makes viruses see a new way out. The proliferation of CommWarrior and its variants was once very distressing. They are constantly copied through MMS, which not only affects the function of mobile phones, but also causes the user's phone bill to skyrocket. If you are infected with this virus, just delete the MMS in the corresponding folder of the system.

Fourth: install anti-virus software.

If the virus cannot be cleaned manually, please try to install antivirus software. Software such as Symantec, Guanghua, McAfee, F-Secure, Kingsoft, etc. Both have mobile phone versions. Download or buy the corresponding software of your mobile phone system online. At present, most anti-virus software has multiple versions, 1, aiming at S60 version of Series60 platform. 2.S80 version of Series80/90 platform; 3.UIQ version of UIQ platform; 4. For two versions of Microsoft Windows Mobile; 5. For the version of Linux, you need to pay attention when installing.

At present, the anti-virus software of mobile phone is relatively perfect, which can carry out overall and target anti-virus, set planned tasks for anti-virus and virus database upgrade, automatically upgrade and kill viruses at a specified time, and carry out real-time monitoring, just like a firewall in a computer, to monitor SMS, MMS, WAP and programs in real time.

Fifth: Always back up personal data.

Some viruses are very destructive. Once the mobile phone is infected, all the data is lost or cannot be restarted. Some viruses or variants cannot be completely removed by software. At this time, it is necessary to "break the machine" and restore the mobile phone to the factory state. So it is very necessary to back up data frequently.