Table of Contents
Libraesva ESG does standard filename and filetype content analysis to protect you from insecure attachments. Below are listed default blocked filenames and filetypes.
If an attachment matches a custom rule from the Attachment Filters page, these standard checks will be ignored.
Blocked file extensions
| .ade | File extension “ade” not allowed |
|---|---|
| .adp | File extension “adp” not allowed |
| .ani | File extension “ani” not allowed |
| .appcontent-ms | File extension “appcontent-ms” not allowed |
| .appref-ms | File extension “appref-ms” not allowed |
| .b64 | File extension “b64” not allowed |
| .bat | File extension “bat” not allowed |
| .bhx | File extension “bhx” not allowed |
| .cab | File extension “cab” not allowed |
| .cdxml | File extension “cdxml” not allowed |
| .ceo | File extension “ceo” not allowed |
| .cer | File extension “cer” not allowed |
| .chm | File extension “chm” not allowed |
| .cmd | File extension “cmd” not allowed |
| .cnf | File extension “cnf” not allowed |
| .cnt | File extension “cnt” not allowed |
| .com | File extension “com” not allowed |
| .cpl | File extension “cpl” not allowed |
| .crt | File extension “crt” not allowed |
| .cur | File extension “cur” not allowed |
| .der | File extension “der” not allowed |
| .diagcab | File extension “diagcab” not allowed |
| .dll | File extension “dll” not allowed |
| .exe | File extension “exe” not allowed |
| .fdf | File extension “fdf” not allowed |
| .grp | File extension “grp” not allowed |
| .hpj | File extension “hpj” not allowed |
| .hqx | File extension “hqx” not allowed |
| .hta | File extension “hta” not allowed |
| .ico | File extension “ico” not allowed |
| .img | File extension “img” not allowed |
| .ins | File extension “ins” not allowed |
| .iqy | File extension “iqy” not allowed |
| .iso | File extension “iso” not allowed |
| .isp | File extension “isp” not allowed |
| .its | File extension “its” not allowed |
| .jar | File extension “jar” not allowed |
| .jnlp | File extension “jnlp” not allowed |
| .job | File extension “job” not allowed |
| .jse? | File extension “js/jse” not allowed |
| .lha | File extension “lha” not allowed |
| .lib | File extension “lib” not allowed |
| .lnk | File extension “lnk” not allowed |
| .lzh | File extension “lzh” not allowed |
| .mad | File extension “mad” not allowed |
| .maf | File extension “maf” not allowed |
| .mag | File extension “mag” not allowed |
| .mam | File extension “mam” not allowed |
| .maq | File extension “maq” not allowed |
| .mar | File extension “mar” not allowed |
| .mas | File extension “mas” not allowed |
| .mat | File extension “mat” not allowed |
| .mau | File extension “mau” not allowed |
| .mav | File extension “mav” not allowed |
| .maw | File extension “maw” not allowed |
| .mcf | File extension “mcf” not allowed |
| .mda | File extension “mda” not allowed |
| .mde | File extension “mde” not allowed |
| .mdz | File extension “mdz” not allowed |
| .mhtml | File extension “mhtml” not allowed |
| .mim | File extension “mim” not allowed |
| .mobileconfig | File extension “mobileconfig” not allowed |
| .msc | File extension “msc” not allowed |
| .msi | File extension “msi” not allowed |
| .msp | File extension “msp” not allowed |
| .mst | File extension “mst” not allowed |
| .msu | File extension “msu” not allowed |
| .oft | File extension “oft” not allowed |
| .pif | File extension “pif” not allowed |
| .pl | File extension “pl” not allowed |
| .prf | File extension “prf” not allowed |
| .printerexport | File extension “printerexport” not allowed |
| .ps1 | File extension “ps1” not allowed |
| .ps1xml | File extension “ps1xml” not allowed |
| .ps2 | File extension “ps2” not allowed |
| .ps2xml | File extension “ps2xml” not allowed |
| .pscd1 | File extension “pscd1” not allowed |
| .pscd2 | File extension “pscd2” not allowed |
| .psdm1 | File extension “psdm1” not allowed |
| .pssc | File extension “pssc” not allowed |
| .pst | File extension “pst” not allowed |
| .py | File extension “py” not allowed |
| .pyc | File extension “pyc” not allowed |
| .pyo | File extension “pyo” not allowed |
| .pyw | File extension “pyw” not allowed |
| .pyz | File extension “pyz” not allowed |
| .pyzw | File extension “pyzw” not allowed |
| .reg | File extension “reg” not allowed |
| .scf | File extension “scf” not allowed |
| .scr | File extension “scr” not allowed |
| .sct | File extension “sct” not allowed |
| .settingcontent-ms | File extension “settingcontent-ms” not allowed |
| .shb | File extension “shb” not allowed |
| .shs | File extension “shs” not allowed |
| .sys | File extension “sys” not allowed |
| .theme | File extension “theme” not allowed |
| .udl | File extension “udl” not allowed |
| .url | File extension “url” not allowed |
| .uue | File extension “uue” not allowed |
| .vbe | File extension “vbe” not allowed |
| .vbp | File extension “vbp” not allowed |
| .vbs | File extension “vbs” not allowed |
| .vhd | File extension “vhd” not allowed |
| .vmdk | File extension “vmdk” not allowed |
| .vsmacros | File extension “vsmacros” not allowed |
| .vss | File extension “vss” not allowed |
| .vst | File extension “vst” not allowed |
| .vsw | File extension “vsw” not allowed |
| .vxd | File extension “vxd” not allowed |
| .webpnp | File extension “webpnp” not allowed |
| .website | File extension “website” not allowed |
| .ws | File extension “ws” not allowed |
| .wsb | File extension “wsb” not allowed |
| .wsc | File extension “wsc” not allowed |
| .wsf | File extension “wsf” not allowed |
| .wsh | File extension “wsh” not allowed |
| .xbap | File extension “xbap” not allowed |
| .xll | File extension “xll” not allowed |
| .xnk | File extension “xnk” not allowed |
| .xxe | File extension “xxe” not allowed |
Blocked filetypes
| self-extract | File type “self-extract” not allowed |
|---|---|
| executable | File type “executable” not allowed |
| ELF | File type “ELF” not allowed |
| Registry | File type “Registry” not allowed |
| Installer | File type “Installer” not allowed |