new file mode 100644
--- /dev/null
+++ b/browser/browser/aboutCertError.ftl
@@ -0,0 +1,13 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Variables:
+# $hostname (String) - Hostname of the website with cert error.
+cert-error-intro = { $hostname } yaroqsiz xavfsizlik sertifikatidan foydalanadi.
+cert-error-trust-cert-invalid = Sertifikat ishonchli emas, chunki u yaroqsiz CA sertifikat tomonidan berilgan.
+cert-error-trust-untrusted-issuer = Sertifikat ishonchli emas, chunki sertifikatni beruvchi ishonchli emas.
+cert-error-trust-signature-algorithm-disabled = Ushbu sertifikat ishonchli emas, chunki  xavfsiz bo‘lmagan algoritmdan foydalanib yozilgan imzo bo‘lganligi uchun o‘chirib qo‘yilgan.
+cert-error-trust-expired-issuer = Sertifikat ishonchli emas, chunki sertifikatni beruvchi eskirgan.
+cert-error-trust-self-signed = Sertifikat ishonchli emas, chunki uni o‘zi kiritgan.
+cert-error-untrusted-default = Sertifikat ishonchli manbadan emas.