How does the mobile phone virus work?

Cell phone virus is slowly approaching and infiltrating into our lives. However, what do you know about it? Do you know what a mobile phone virus is? Do you know how harmful the mobile phone virus is? Do you know how to prevent and remove mobile phone viruses? If you don't know anything about the author's question, take a quick look at this special report on mobile phone virus.

First, the concept of mobile phone virus

Mobile phone virus is also a computer program, which is as contagious and destructive as other computer viruses (programs). 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.

Second, the history of mobile phone viruses

The earliest mobile phone virus in history appeared in 2000. At that time, Movistar, a mobile phone company, received a large number of harassing short messages named "Timofonica" sent by computers, and the virus sent spam messages such as swearing to users in the system through 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.

So, what are the mobile phone viruses that appeared later? What harm do they have?

Third, the working principle of mobile phone virus

The software in the mobile phone, embedded operating system (the operating system solidified in the chip, generally written in JAVA, C++ and other languages) is equivalent to a small intelligent processor, so it will be attacked by viruses. Moreover, short messages are not only simple words, but also include ringtones, pictures and other information, which need to be interpreted by the operating system in the mobile phone and then displayed to the mobile phone users. Mobile phone viruses invade mobile phones by virtue of loopholes in software systems.

In order to spread and run mobile phone viruses, mobile service providers need to provide data transmission functions, and mobile phones need to support advanced programming functions such as Java. Nowadays, many mobile phones with internet access and download functions may be invaded by mobile phone viruses.

Fourth, 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. Destroy the mobile phone software and hardware

The most common harm of mobile phone virus is to destroy the hardware and software of mobile phone, which leads to the failure of mobile phone to work normally.

4. Causing paralysis of communication network

If the virus infects the mobile phone, it will force the mobile phone to 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.

Verb (abbreviation for verb) 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.

Little knowledge:

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.

Little knowledge:

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 Britain, resulting in a sharp increase in users' information fees.

3. The virus "mobile phone hacker" for mobile phone bugs.

Little knowledge:

Hack.mobile.smsdos virus is spread by short messages with virus programs. 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. SMSDOS "virus aims at Siemens mobile phone.

Little knowledge:

"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

Symptoms of cell phone poisoning

EPOC _ alarm

The phone has been ringing the alarm.

EPOC BANDINFO。 A

Change the user information to "Some fool owns this"

Fake EPOC. A

It is a scary move to display pictures when the mobile phone screen is formatted with the built-in hard disk, but it is not serious.

EPOC ghost. A

Display "Everyone hates you" on the screen (everyone hates you).

Light of EPOC. A

Keep the background light flashing all the time

EPOC is alone. A

This is a kind of malignant viruses, which will invalidate key operations.

Timofenica

Send toxic mail to the mailbox in the address book, and also send a large number of short messages to the mobile phone through the short message server.

Hack.mobile.smsdos

It will cause the phone to crash or shut down automatically.

inevitable

When there is an incoming call, "Unavaifaule" 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.

Six, the spread of mobile phone viruses

1. Spread via Bluetooth

From June 5438 to February 2004, Kapoor virus was discovered in Shanghai. The virus will modify the system settings of smart phones, and automatically search whether there are loopholes in neighboring mobile phones through Bluetooth and attack them.

2. Infect the mobile phone executable file on the PC

On June 5438+1October1day, 2005, "Velasco" virus was discovered. After the virus infects the computer, it will search the SIS executable file on the computer hard disk for infection.

3. Use MMS multimedia message service to spread.

On April 4, 2005, a new way of spreading mobile phone virus appeared, which was spread through MMS service.

4. Use BUG attacks on mobile phones

Generally speaking, this virus runs on the "EPOC" of portable information equipment, such as "EPOC- Alarm" and "EPOC- Bundhit Information". One ","EPOC-fake. " "EPOC-ghost. A "and" EPOC- ignition. One ".

Seven, the target of mobile phone virus attack

1. Attacks Internet content, tools and services that provide services for mobile phones.

2. Attacking WAP server makes WAP mobile phone unable to receive normal information.

3. Attack the control "gateway" and send spam to the mobile phone.

4. Directly attack the mobile phone itself, making the mobile phone unable to provide services.

Eight, the prevention of mobile phone virus

1. Scramble SMS and MMS, and delete.

Scrambled SMS and MMS may contain viruses, so delete them immediately after receiving them to avoid being infected with mobile phone viruses.

2. Don't accept strange requests.

When using Bluetooth, infrared and other wireless transmission functions to receive information, you must choose a safe and reliable transmission object. If a strange device requests a connection, it is best not to accept it. Because as I said before, mobile phone viruses will automatically search for devices within wireless range to spread the virus.

3. Ensure the security of the download.

At present, there are many resources on the Internet to provide mobile phone downloads. However, there are many viruses hidden in these resources, which requires users to ensure that the download site is safe and reliable when downloading various resources with their mobile phones, and try to avoid downloading from personal websites.

4. Choose your own background.

Beautiful background pictures and screensavers are pleasing to the eye, but there are viruses in the pictures that make people uncomfortable, so users had better use the pictures that come with their mobile phones to set the background.

5. Don't visit dangerous websites.

For example, some hackers and pornographic websites are very dangerous, and there are many viruses and Trojans hidden inside. It is very dangerous to browse such websites with mobile phones.

Nine, mobile phone virus removal

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.