With everyone avoiding contact with other people at all costs, the use of digital signatures has become more common. However, some forms of digital signatures are more secure than others.
Services like Adobe or Docusign encrypt your digital signature. This means if someone tries to access it without your password, all they will see is gobbly gook. As long as you are careful with your passwords, your signature is secure with these types of services.
Other solutions for digital signatures are not as safe. Pictures of your written signature stored unencrypted or emailed can easily be stolen. If they are on your Google Drive, Onedrive or Dropbox this makes them even more vulnerable. Likewise, entering your signature into text fields in unencrypted forms is also dangerous.
Remember that your digital signature is used to verify your identify. You should treat it like you do your credit card number. If you wouldn’t store or transmit your credit card number using a particular method or service, then you shouldn’t store or transmit your signature that way either.