Table 1.

The table below summarizes the security models reviewed in the document review process.

Security Model	Cryptographic Algorithms	Steganography Technique	Backup and Recovery	Data Share	References
The private cloud for software as a service (SaaS)	AES	LSB video technique of steganography	No mention of data backups and recovery	Deliver services to end users in a pay-as-you-go manner	[6]
Image-Based Steganography Using Pseudorandom Sequence Generator Function and DCT Coefficients	No clear mention of cryptographic algorithms	LSB Image steganography using pseudo-random sequence function with 2D-DCT	No mention of data backups and recovery	Provide services in a pay-as-you-go manner	[1]
The hybrid encryption in Bluetooth innovation and in cloud computing	AES, FHE	Steganography not applied	Maintain data redundancy and security	Bluetooth	[23]
Data security in cloud computing using Elliptic Curve Cryptography	ECC	Steganography not applied	No mention of backups and recovery	Data share not specified	[24]
Visually Imperceptible Hybrid Crypto Steganography (VIHCS) model	AES, RSA	2D-Discrete Wavelet Transform (2D-DWT-2L) AGA-OPAP with LSB	No clear mention of backups and recovery	Combined cryptosystems with Steganography for data transmission	[25]
RGB shuffling method using combined steganography and cryptography	RGB shuffling algorithm and Message Digest 5 (MD5) algorithm	LSB image, video, or audio technique of steganography	Mention of image recovery in one of the phases	No specific mention of data sharing using the model	[26]