Storing Non Printable Characters In Database Security Issue

Storing Non Printable Characters In Database Security Issue You could use the special separator characters hex 1c 1f yet they are non printable and some technologies have issues processing data containing them So plan B if your data is in UTF 8 you could pick a random UTF 8 character that is extremely unlikely to appear in any source data you receive

If you must use a non Unicode data type always make sure that the code page of the database and the code page of any non Unicode columns can store the non Unicode data correctly For example if you want to store code page 949 Korean character data use a Korean collation for the database 4 Answers Sorted by 4 I am storing them in a varchar field There s one problem at least For text that could have special characters you need nvarchar Share Improve this answer Follow answered Dec 2 2009

AaronBertrand sorry I didn t clarify earlier The PrintSpecial variable is working how I expect it to The problem I m getting is when I use the NonPrintSpecial variable By using the value in my NonPrintSpecial variable I m trying to say keep all non printable characters that s where the CHAR 1 CHAR 31 comes in to play that s the

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Storing Non Printable Characters In Database Security Issue

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Varchar Vs Nvarchar Storing Non English Characters SQL In Sixty

How Can I See All The quot special quot Characters Permissible In A Varchar

https://stackoverflow.com/questions/7038213
Where can I see all the non visible characters stored on a varchar or char field in SQL Server e g n new line r carriage return and other non printable characters How to print them as they are not printable

Why Disallow Special Characters In A Password

https://security.stackexchange.com/questions/17192
In fact it seems quite reasonable to only allow printable ascii 32 126 and ban the non printable ASCII 0 31 and 127 But if by special characters you mean unicode not ASCII characters like it seems reasonable for simplicity of implementation from multiple operating systems keyboards browsers to not allow

Handling Non Printable Characters And Blacklisting In Database

https://community.xano.com/discussion/4179614/handling-non-printable
Whitelisting non printable characters Is there a specific method for whitelisting non printable characters like the newline character n Character blacklisting In most cases blacklisting certain characters rather than whitelisting could be more beneficial for our use case

How To Protect Against Unicode Security Vulnerabilities

https://stackoverflow.com/questions/47176096
The Mongolian Vowel Separator U 180E is one such non printable space character Another vulnerability is to use alternative Unicode characters that look similar The Mimic tool shows how this can work

Errors Using Special Characters In Access Databases Microsoft

https://learn.microsoft.com//access/error-using-special-characters
Non printable characters In this case you receive the following error message The field name is not valid Make sure that the name doesn t contain a period exclamation point bracket leading space or non printable character such as a

Run a Query in Management Studio and copy the single known field with issues from the grid Paste the field into a hex editor paste into the text portion so you can see the hex of the characters Lookup the characters in question against an ASCII chart if It seems from the documentation about BCP Specify Field and Row Terminators SQL Server that non printable characters are not supported Characters Supported As Terminators The bcp command BULK INSERT statement and the OPENROWSET bulk rowset provider support a variety of characters as field or row

Database security best practices We ve discussed that how to secure a database includes encrypting data authenticating only authorized users against the database or application limiting user access to the appropriate subset of the data and continuous monitoring and auditing of activities