How to Recover a SQL Server Database Encrypted by Ransomware: Don't Force-Attach MDF, Evaluate Recovery Chances in Three Steps
When a SQL Server database (MDF, NDF, BAK) is encrypted by ransomware, blindly running DBCC CHECKDB or forcing attachment can cause further damage. This article explains emergency actions, page-level recovery principles, and how to assess ransomware data recovery feasibility without paying the ransom.
Can Files Encrypted with .AIR Be Saved? First Distinguish Makop from Dharma, Then Decide on Ransomware Decryption and Recovery
When server, ERP, or database files are renamed with .AIR or .air extensions, do not blindly apply decryption tools. The same extension may belong to the Makop family or a Dharma (CrySiS) variant. This article explains how to distinguish the families by file naming structure and ransom note characteristics, outlines on-site containment, and details underlying data recovery paths for SQL Server and business systems like Kingdee and Yonyou when direct decryption is blocked.
Which Files to Keep After a Yonyou Database Is Encrypted: Delete These and They're Gone for Good
After a Yonyou account set is encrypted by ransomware, what determines how much can be recovered is often not antivirus software but whether you kept the right files. This article provides a checklist of files that must be preserved (data files, logs, UFSystem system database, historical backups, ransom notes and sample pairs, system and database logs), explains correct preservation methods, several actions that directly destroy recovery chances, and how to determine the recovery path after preservation.
How to Restore Kingdee Accounting Data After Ransomware Encryption: From Containment to Rebuilding the Server
When Kingdee KIS, K/3 WISE, or Cloud Galaxy servers are encrypted by ransomware, first isolate and stop writing to the original disk, then inventory all backup copies; if no usable backup exists, there are still two paths: family identification and decryption feasibility assessment, and low-level database residual extraction. This article explains each step's judgment conditions, operations that easily destroy data, and how finance should reconcile after rebuilding the Kingdee server in a clean environment.
Is Your SQL Server Ready After Recovery? Five-Step Verification from CHECKDB to Financial Reconciliation
A successful database attach and service start do not guarantee complete and usable business data. This article outlines a five-step verification sequence after ransomware or severe failure: first perform engine-level consistency checks on a copy, then examine constraints and orphan records, logins and permissions, recovery point-in-time, and finally have business and finance staff reconcile and test in an isolated environment before going live.
