Shifenzheng.bak May 2026

If present, shifenzheng.bak is typically found in:

Several trends suggest a decline:

However, due to the sheer inertia of legacy systems—especially in smaller cities, older banks, and government sub-offices—shifenzheng.bak will likely remain a lurking threat for at least another decade.

Date: March 23, 2026.

shifenzheng.bak refers to a prominent 2013 data leak involving the personal information of approximately 20 million Chinese hotel guests. The filename literally translates to "ID card backup" (身份证 - shēnfènzhèng

) and originated from a security vulnerability in the wireless network authentication systems used by several major hotel chains. Key Incident Details

The leak was attributed to a vulnerability in a system developed by Zhejiang Huida Yizhan Network Technology Co.

, which provided Wi-Fi and authentication services for multiple hotel brands. Affected Chains: Major Chinese budget hotel chains, including 7 Days Inn (7天), and GreenTree Inn (格林豪泰), were among those affected. File Specifics: Original Format: A 1.7 GB RAR archive that expands into a 7.47 GB to 7.8 GB .bak file Technical Nature: Microsoft SQL Server 2008 database backup file. Data Included:

The database contained sensitive records from approximately 2010 to 2013, including: Full names and gender. ID card numbers (Shifenzheng). Home addresses and phone numbers. Hotel check-in and check-out times. Technical Impact and Handling The leak was highly publicized on Chinese tech blogs like Landian News after appearing on the vulnerability reporting platform Because the data was in a

format, users typically required a SQL Server instance to "restore" the database and query the information. Some developers later converted it into easier-to-read formats like CSV for wider (and illegal) circulation.

Accessing or distributing this data is illegal in many jurisdictions and poses significant privacy risks to the affected individuals. to restore a generic file in SQL Server, or do you need more historical context on this specific leak? AI responses may include mistakes. Learn more

命令行下从bak文件恢复sqlserver数据库方法 - 博客园 shifenzheng.bak

Given the ambiguity, here’s a short fictional story based on the most likely interpretation — a backup of an ID card file.

The Last Backup

Fang Lin was a meticulous man. Every night at 2 AM, his computer automatically backed up his entire document folder. One file always caught his eye: shifenzheng.bak.

It was a scan of his national ID card — front and back — saved years ago when he first applied for a loan. He never deleted it. "Just in case," he told himself.

Then one Tuesday, his wallet was stolen. Phone, cards, ID — gone. Panic set in as he imagined the bureaucracy: the queues, the forms, the lost weeks. But then he remembered.

At 3 AM, sleepless, he opened his old laptop. There it was: shifenzheng.bak. He printed the scan, walked to the Public Security Bureau at 8 AM, and showed it to the officer.

"How do I know this is real?" the officer asked.

Fang Lin smiled tiredly. "Because I backed it up when I still believed the future would be simple."

The officer laughed, processed the temporary paper, and sent him home. That night, Fang Lin renamed the file: shifenzheng_forever.bak.

Sometimes, paranoia is just preparation in disguise.

The filename "shifenzheng.bak" refers to a notorious 2013 data breach in China involving the leak of personal information for approximately 20 million hotel guests. The name is a pinyin romanization of shēnfènzhèng (身份证), meaning "Identity Card," with the .bak extension indicating a database backup file. The Story of "shifenzheng.bak" If present, shifenzheng

In late 2013, a massive file titled shifenzheng.bak began circulating on Chinese cloud storage platforms like Baidu Yun. It was a 1.7 GB compressed archive that expanded into a 7.47 GB SQL database backup.

The Content: The database contained sensitive details of 20 million people, including names, gender, birthdays, home addresses, mobile numbers, email addresses, and official ID numbers.

The Source: Initially linked to a vulnerability in a third-party hotel management system (Huazhu/Huiduizhan), investigations by tech communities suggested the data primarily consisted of membership records from major hotel chains like Jinjiang Inn.

The Aftermath: The file became a symbol of early widespread privacy failure in the digital age. It was quickly mirrored across the web, leading to the creation of searchable "public" databases where anyone could look up the travel history and personal details of others just by entering a name. Creative Narrative: "The Digital Ghost"

If you are looking for a fictionalized story based on this prompt, here is a concept:

The Discovery: A junior database admin at a budget hotel chain discovers a forgotten file on an unsecured backup server. It’s labeled simply: shifenzheng.bak.

The Revelation: Curious, he restores it to a local machine. Instead of standard logs, he finds a "living" map of the city—millions of entries documenting every check-in, every phone number, and every private address of the nation's travelers.

The Conflict: He realizes the file is being accessed by an external IP every night at 2:00 AM. It’s not just a backup; it’s a "dead drop" for a sophisticated data-harvesting ring.

The Climax: As he tries to delete the file, he receives a text message on his personal phone—a number that was inside the database. The message is just his own ID number followed by: "Don't touch the backup." shenfenzheng | Mandarin Chinese Pinyin English Dictionary

shifenzheng.bak refers to a notorious database backup file linked to significant personal data breaches in China, particularly the massive 2013 leak of hotel registration records. Context and Origin

The name is derived from the Chinese word for "Identity Card" ( shenfenzheng However, due to the sheer inertia of legacy

, 身份证), though often slightly misspelled in file naming conventions as "shifenzheng." extension indicates a Microsoft SQL Server database backup. The Incident

: This specific file gained notoriety during the leak of approximately 20 million customer records from major Chinese hotel chains like Home Inn and Hanting. Data Included

: The leaked information typically contained names, ID numbers, gender, birth dates, mobile numbers, and detailed check-in/check-out logs. Technical Usage

In developer contexts, this file has been used in demonstration projects to show how to handle and search large datasets. For instance, some open-source projects on platforms like shifenzheng.bak

as a sample database to build ID search tools or web services. Security Risks

Because it contains real, sensitive PII (Personally Identifiable Information), the circulation of this file is a major privacy concern. It has been distributed via BitTorrent and cloud storage services, often appearing in "dark web" forums or data-sharing communities. in China or how to check if your information has been part of a breach?

Data Security Risks: The presence of a file named shifenzheng.bak on a server or computer is a major red flag for data exposure. It often contains unencrypted backups of Chinese Resident Identity Card information, including names, ID numbers, and addresses.

Association with Pirated Software: Search results indicate this file name is often bundled or mentioned alongside "cracks," "activators," and "keygen" tools for various software like FluidSim or Avast. This suggests it may be part of malicious packages or used as a placeholder in directories for pirated materials.

Vulnerability Target: Security scanners and "vulnerability finders" often look for this specific filename because it represents a "low-hanging fruit" for hackers seeking to harvest personal identifiable information (PII) from poorly secured databases or web directories.

Purpose: While it serves as a legitimate backup for some systems, its exposure in public-facing directories is almost always a result of administrative oversight. Critical Warning

If you encounter this file on your system or a server you manage, it should be treated as highly sensitive and potentially compromised. Ensure it is moved to a secure, encrypted location or deleted if no longer needed. Links found in relation to this file on public forums (e.g., Radford University blogs ) are often associated with spam or malicious software distribution. Shifenzheng.bak

Assuming it's a backup file or a software/tool related to "Shifen Zheng" (which could be a person's name, a place, or a term in Chinese), I'll provide a generic review template. Please adjust according to the actual nature of shifenzheng.bak:

The very existence of shifenzheng.bak on a hard drive represents a critical security vulnerability. Here’s why cybersecurity experts lose sleep over it.