diff --git a/documents/업무/4월/2째주/0406.txt b/documents/업무/4월/2째주/0406.txt
index 56a6051..0926f08 100644
--- a/documents/업무/4월/2째주/0406.txt
+++ b/documents/업무/4월/2째주/0406.txt
@@ -1 +1,11 @@
-1
\ No newline at end of file
+이슈처리
+  맥 리사이즈 시 타이틀바 드래그 안되는 버그 
+  로그인 사용자 madn에 따른 클릭투콜 사용 여부 
+  파일 업로드 개수 제한
+  disconnected subscription debounce 적용
+  맥일 때 풀 스크린 옵션 허용
+  읽음처리 소스 개선
+  대화창 오픈 시 이전 대화보기 버튼 출력
+  노티 클릭 시 대화탭으로 이동
+  
+프로토콜 서비스 타임아웃 소스 개선
diff --git a/documents/업무/4월/2째주/next-ucap-messenger-lf-2020-0406-1730.zip b/documents/업무/4월/2째주/next-ucap-messenger-lf-2020-0406-1730.zip
new file mode 100644
index 0000000..45cbaea
Binary files /dev/null and b/documents/업무/4월/2째주/next-ucap-messenger-lf-2020-0406-1730.zip differ
diff --git a/documents/업무/4월/2째주/whitelist.txt b/documents/업무/4월/2째주/whitelist.txt
new file mode 100644
index 0000000..3628b1c
--- /dev/null
+++ b/documents/업무/4월/2째주/whitelist.txt
@@ -0,0 +1,113 @@
+export const commonApiAcceptableFileExtensionsForDocumnet: string[] = [
+  'doc',
+  'docx',
+  'dot',
+  'dotx',
+  'ppt',
+  'pptx',
+  'pot',
+  'potx',
+  'pps',
+  'ppsx',
+  'xls',
+  'xlsx',
+  'xlt',
+  'xltx',
+  'rtf',
+  'txt',
+  'csv',
+  'pdf',
+  'hwp',
+  'log',
+  'one',
+  'ps'
+];
+
+export const commonApiAcceptableFileExtensionsForImage: string[] = [
+  'tif',
+  'ogg',
+  'psd',
+  'ai',
+  'bmp',
+  'gif',
+  'jpg',
+  'jpeg',
+  'png',
+  'cdr',
+  'emf',
+  'eps',
+  'tiff',
+  'wmf'
+];
+export const commonApiAcceptableFileExtensionsForArchive: string[] = [
+  '7z',
+  'zip',
+  'alz',
+  'a00',
+  'a01',
+  'a02',
+  'a03',
+  'a04',
+  'a05',
+  'a06',
+  'a07',
+  'a08',
+  'a09',
+  'tar',
+  'rar',
+  'gz'
+];
+export const commonApiAcceptableFileExtensionsForAudio: string[] = [
+  'wav',
+  'mp3',
+  'm4a',
+  'aac',
+  'aiff',
+  'flac',
+  'm4a',
+  'mp2',
+  'mpega',
+  'mpga',
+  'ogg',
+  'wma'
+];
+export const commonApiAcceptableFileExtensionsForFlash: string[] = [
+  'swf',
+  'fla',
+  'flv'
+];
+export const commonApiAcceptableFileExtensionsForVideo: string[] = [
+  'avi',
+  'mp4',
+  'wmv',
+  'mov',
+  '3gp',
+  'mkv',
+  'ts',
+  'webm',
+  'm4v',
+  'mpg',
+  'mpeg',
+  'rv',
+  'ts',
+  'webm'
+];
+export const commonApiAcceptableFileExtensionsForFolder: string[] = [
+  'zdr',
+  'dat'
+];
+
+export const commonApiAcceptableFileExtensionsForCAD: string[] = [
+  'asc',
+  'dwg',
+  'dws',
+  'dwt',
+  'dxf',
+  'pgp',
+  'plt'
+];
+
+export const commonApiAcceptableFileExtensionsForMac: string[] = [
+  'pages',
+  'keynote'
+];
diff --git a/documents/업무/Issue_doc/lftalk/Issue_2020.04.03 (LF Messenger)_박병은.xlsx b/documents/업무/Issue_doc/lftalk/Issue_2020.04.03 (LF Messenger)_박병은.xlsx
index 1fd394a..c595821 100644
Binary files a/documents/업무/Issue_doc/lftalk/Issue_2020.04.03 (LF Messenger)_박병은.xlsx and b/documents/업무/Issue_doc/lftalk/Issue_2020.04.03 (LF Messenger)_박병은.xlsx differ