Last updated on 
                
                    30 Sep 2022
                
            
            
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                    Also applies to Acrobat Reader
                
            
        
        
            
        
    
Back in 2005, Adobe unveiled the Certified Document Services (CDS) program, which automatically trusts new digital IDs that are chained to (part of the family of) the Adobe Root certificate embedded in Adobe products. CDS, the predecessor to the Adobe Approved Trust List (AATL), has the following certificate authorities offering certificates:
- Entrust
- GlobalSign 
 
- DigiCert (formerly Symantec)